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|
package main
import (
"crypto/rand"
"crypto/sha256"
"database/sql"
"encoding/base64"
"encoding/json"
"flag"
"fmt"
"log"
"net/http"
"os"
"path/filepath"
"strings"
"time"
qrcode "github.com/skip2/go-qrcode"
_ "modernc.org/sqlite"
)
// The template DB is the baseline — it already contains:
// locations, routes, visits, config, sessions, schema_version
// Migrations are numbered from 1 and applied in order.
// Each migration is a single SQL statement.
var dbMigrations = []struct {
version int
sql string
}{
{1, `ALTER TABLE locations ADD COLUMN route_updated_at INTEGER NOT NULL DEFAULT 0`},
{2, `ALTER TABLE locations ADD COLUMN created_by TEXT`},
{3, `ALTER TABLE locations ADD COLUMN created_at INTEGER`},
{4, `ALTER TABLE visits ADD COLUMN visit_type INTEGER NOT NULL DEFAULT 1`},
{5, `ALTER TABLE sessions ADD COLUMN created_at INTEGER NOT NULL DEFAULT 0`},
{6, `CREATE TABLE IF NOT EXISTS invite_tokens (
token TEXT PRIMARY KEY,
username TEXT NOT NULL,
is_admin INTEGER NOT NULL DEFAULT 0,
created_at INTEGER NOT NULL,
expires_at INTEGER NOT NULL,
used_at INTEGER
)`},
}
const initSchema = `
CREATE TABLE IF NOT EXISTS schema_version (
version INTEGER PRIMARY KEY,
applied_at INTEGER NOT NULL
);
`
func openDB(path string) *sql.DB {
db, err := sql.Open("sqlite", path)
if err != nil {
log.Panicf("open db %q: %v", path, err)
}
if _, err := db.Exec("PRAGMA foreign_keys = ON"); err != nil {
log.Panicf("pragma foreign_keys: %v", err)
}
if _, err := db.Exec("PRAGMA journal_mode = WAL"); err != nil {
log.Panicf("pragma journal_mode: %v", err)
}
// ensure schema_version table exists (needed even on fresh template DBs)
if _, err := db.Exec(initSchema); err != nil {
log.Panicf("initSchema: %v", err)
}
// apply any pending migrations
for _, m := range dbMigrations {
var count int
db.QueryRow(`SELECT COUNT(*) FROM schema_version WHERE version = ?`, m.version).Scan(&count)
if count > 0 {
continue // already applied
}
if _, err := db.Exec(m.sql); err != nil {
log.Panicf("migration %d: %v", m.version, err)
}
mustExec(db, `INSERT INTO schema_version (version, applied_at) VALUES (?, ?)`,
m.version, time.Now().Unix())
log.Printf("applied migration %d", m.version)
}
return db
}
func mustExec(db *sql.DB, query string, args ...any) {
if _, err := db.Exec(query, args...); err != nil {
log.Panicf("exec %q: %v", query, err)
}
}
const mapHTML = `<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>Modular Flyer Map</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no">
<link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css"/>
<link rel="stylesheet" href="https://unpkg.com/@geoman-io/leaflet-geoman-free@2.19.2/dist/leaflet-geoman.css"/>
<style>
html, body, #map { height: 100%; margin: 0; padding: 0; }
/* shared button base */
.btn {
border: none; border-radius: 6px; cursor: pointer;
font-family: sans-serif; font-weight: 500;
-webkit-tap-highlight-color: transparent;
touch-action: manipulation; user-select: none;
}
.btn:active { opacity: 0.75; }
/* top bar — username + hamburger */
#top-bar {
display: none;
position: absolute; top: 12px; right: 12px; z-index: 1000;
align-items: center; gap: 0;
}
#top-bar.visible { display: flex; }
#user-label {
background: white; border: 2px solid rgba(0,0,0,0.25);
border-right: none;
border-radius: 6px 0 0 6px;
padding: 10px 14px; font-size: 14px; font-family: sans-serif;
color: #333; white-space: nowrap;
box-shadow: 0 2px 6px rgba(0,0,0,0.3);
pointer-events: none;
}
#menu-btn {
background: white; border: 2px solid rgba(0,0,0,0.25);
border-radius: 0 6px 6px 0;
padding: 10px 14px; font-size: 17px;
box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}
/* dropdown menu */
#menu-dropdown {
display: none;
position: absolute; top: 52px; right: 12px; z-index: 1001;
background: white; border: 1px solid rgba(0,0,0,0.15);
border-radius: 6px; box-shadow: 0 4px 12px rgba(0,0,0,0.2);
min-width: 160px; overflow: hidden;
}
/* placement mode crosshair */
#crosshair {
display: none;
position: absolute;
top: 50%; left: 50%;
transform: translate(-50%, -50%);
z-index: 1000;
font-size: 36px;
line-height: 1;
pointer-events: none;
color: #e63946;
text-shadow: 0 0 4px rgba(255,255,255,0.8);
}
#crosshair.active { display: block; }
/* placement action bar */
#place-bar {
display: none; align-items: center; gap: 12px;
padding: 12px 16px;
}
#place-bar.open { display: flex; }
#place-confirm-btn {
flex: 1; background: #4a9; color: #fff;
padding: 12px; font-size: 16px; border-radius: 6px;
}
#place-cancel-btn {
background: #444; color: #ccc;
padding: 12px 16px; font-size: 15px; border-radius: 6px;
}
/* place form sheet */
#place-sheet { padding: 20px 16px 16px; }
#place-sheet h3 { margin: 0 0 14px; font-size: 16px; color: #aaa; font-weight: normal; text-transform: uppercase; letter-spacing: 0.05em; }
#place-name {
width: 100%; box-sizing: border-box;
padding: 12px; font-size: 16px; border-radius: 6px;
border: 1px solid #444; background: #2a2a2a; color: #eee;
margin-bottom: 12px;
}
#place-comment {
width: 100%; box-sizing: border-box;
padding: 12px; font-size: 16px; border-radius: 6px;
border: 1px solid #444; background: #2a2a2a; color: #eee;
margin-bottom: 12px;
}
#place-visited-btn { background: #4a9; color: #fff; padding: 12px 24px; font-size: 16px; width: 100%; margin-bottom: 8px; }
#place-na-btn { background: #222; color: #fff; padding: 12px 24px; font-size: 16px; width: 100%; margin-bottom: 8px; }
#place-comment-btn { background: #e6a800; color: #fff; padding: 12px 24px; font-size: 16px; width: 100%; margin-bottom: 8px; }
#place-only-btn { background: #555; color: #ccc; padding: 12px 24px; font-size: 15px; width: 100%; margin-bottom: 8px; }
#place-sheet-cancel { background: #333; color: #aaa; padding: 12px 24px; font-size: 15px; width: 100%; }
/* delete confirm sheet */
#delete-sheet { padding: 20px 16px 16px; }
#delete-sheet p { margin: 0 0 16px; font-size: 15px; color: #aaa; }
#delete-sheet b { color: #fff; }
#delete-confirm-btn { background: #c0392b; color: #fff; padding: 12px 24px; font-size: 16px; width: 100%; margin-bottom: 8px; }
#delete-cancel-btn { background: #333; color: #aaa; padding: 12px 24px; font-size: 15px; width: 100%; }
/* legend */
#legend {
position: absolute; bottom: 24px; left: 12px; z-index: 1000;
background: white; border: 1px solid rgba(0,0,0,0.15);
border-radius: 6px; box-shadow: 0 2px 6px rgba(0,0,0,0.2);
padding: 8px 12px; font-family: sans-serif; font-size: 12px;
color: #333; line-height: 1.8;
}
.legend-row { display: flex; align-items: center; gap: 8px; }
.legend-dot {
width: 12px; height: 12px; border-radius: 50%; flex-shrink: 0;
border: 2px solid #fff; box-shadow: 0 0 0 1px rgba(0,0,0,0.2);
}
#menu-dropdown.open { display: block; }
#menu-dropdown button {
display: block; width: 100%; padding: 14px 18px;
text-align: left; font-size: 16px; color: #222;
background: transparent; border: none; border-bottom: 1px solid #eee;
cursor: pointer; touch-action: manipulation;
-webkit-tap-highlight-color: transparent;
}
#menu-dropdown button:last-child { border-bottom: none; }
#menu-dropdown button:active { background: #f4f4f4; }
/* bottom sheet — shared */
.sheet {
display: none;
position: absolute; bottom: 0; left: 0; right: 0;
z-index: 1001;
background: #1a1a1a; color: #eee;
font-family: sans-serif;
box-shadow: 0 -2px 10px rgba(0,0,0,0.5);
}
.sheet.open { display: block; }
/* route picker sheet */
#route-sheet { padding: 0; }
#route-sheet-title {
padding: 14px 16px 10px;
font-size: 13px; color: #888; text-transform: uppercase; letter-spacing: 0.05em;
border-bottom: 1px solid #2a2a2a;
}
#route-list { list-style: none; margin: 0; padding: 0; }
#route-list li {
display: flex; align-items: center; gap: 12px;
padding: 14px 16px; border-bottom: 1px solid #2a2a2a;
cursor: pointer; touch-action: manipulation;
-webkit-tap-highlight-color: transparent;
}
#route-list li:active { background: #252525; }
.route-dot {
width: 18px; height: 18px; border-radius: 50%;
flex-shrink: 0; border: 2px solid rgba(255,255,255,0.3);
}
.route-label { font-size: 16px; flex: 1; }
.route-count { font-size: 13px; color: #666; }
#new-route-btn {
width: 100%; padding: 16px; font-size: 16px; color: #4af;
background: transparent; text-align: left;
border-top: 1px solid #333;
}
#sheet-cancel-btn {
width: 100%; padding: 14px; font-size: 15px; color: #888;
background: #111; text-align: center;
border-top: 1px solid #222;
}
/* draw bar — shown while drawing */
#draw-bar {
padding: 12px 16px;
display: none; align-items: center; gap: 12px;
}
#draw-bar.open { display: flex; }
#draw-color-dot {
width: 16px; height: 16px; border-radius: 50%; flex-shrink: 0;
}
#draw-label { flex: 1; font-size: 15px; color: #aaa; }
#draw-count { font-size: 15px; color: #fff; font-weight: 600; }
#finish-btn {
background: #4a9; color: #fff;
padding: 10px 20px; font-size: 16px;
}
#draw-cancel-btn {
background: #444; color: #ccc;
padding: 10px 14px; font-size: 15px;
}
/* besucht sheet */
#visit-sheet { padding: 20px 16px 16px; }
#visit-sheet h3 { margin: 0 0 4px; font-size: 16px; color: #fff; }
#visit-sheet-street { font-size: 13px; color: #888; margin-bottom: 14px; }
#visit-comment {
width: 100%; box-sizing: border-box;
padding: 12px; font-size: 16px; border-radius: 6px;
border: 1px solid #444; background: #2a2a2a; color: #eee;
margin-bottom: 12px;
}
#visit-submit-btn { background: #4a9; color: #fff; padding: 12px 24px; font-size: 16px; width: 100%; margin-bottom: 8px; }
#visit-cancel-btn { background: #333; color: #aaa; padding: 12px 24px; font-size: 15px; width: 100%; }
/* einladen sheet */
#invite-sheet { padding: 20px 16px 16px; }
#invite-sheet h3 { margin: 0 0 16px; font-size: 16px; color: #aaa; font-weight: normal; text-transform: uppercase; letter-spacing: 0.05em; }
#invite-sheet input[type=text] {
width: 100%; box-sizing: border-box;
padding: 12px; font-size: 16px; border-radius: 6px;
border: 1px solid #444; background: #2a2a2a; color: #eee;
margin-bottom: 12px;
}
#invite-sheet label { display: flex; align-items: center; gap: 10px; font-size: 15px; color: #aaa; margin-bottom: 16px; cursor: pointer; }
#invite-sheet input[type=checkbox] { width: 18px; height: 18px; cursor: pointer; }
#invite-submit-btn { background: #4a9; color: #fff; padding: 12px 24px; font-size: 16px; width: 100%; margin-bottom: 8px; }
#invite-cancel-btn { background: #333; color: #aaa; padding: 12px 24px; font-size: 15px; width: 100%; }
/* einladen waiting state */
#invite-waiting { display: none; padding: 20px 16px 16px; }
#invite-waiting.open { display: block; }
#invite-qr {
display: flex; justify-content: center; margin-bottom: 14px;
}
#invite-qr img { border-radius: 8px; width: 220px; height: 220px; }
#invite-url-box {
background: #2a2a2a; border-radius: 6px; padding: 12px;
font-size: 12px; color: #4af; word-break: break-all;
margin-bottom: 10px; user-select: all;
}
#invite-copy-btn { background: #333; color: #eee; padding: 10px 20px; font-size: 15px; width: 100%; margin-bottom: 12px; }
#invite-status { text-align: center; color: #888; font-size: 14px; margin-bottom: 14px; }
#invite-wait-cancel-btn { background: #333; color: #aaa; padding: 12px; font-size: 15px; width: 100%; }
/* toast for route selection */
#route-toast {
display: none;
position: absolute; bottom: 0; left: 0; right: 0;
z-index: 1000;
background: #1a1a1a; color: #eee;
font-family: sans-serif;
padding: 14px 16px;
align-items: center; gap: 12px;
box-shadow: 0 -2px 8px rgba(0,0,0,0.4);
}
#route-toast.open { display: flex; }
#toast-dot { width: 14px; height: 14px; border-radius: 50%; flex-shrink: 0; }
#toast-label { flex: 1; font-size: 15px; }
#toast-close {
background: transparent; color: #888;
font-size: 22px; padding: 0 4px; line-height: 1;
}
</style>
</head>
<body>
<div id="map"></div>
<!-- auth overlay -->
<div id="auth-overlay" style="display:flex;position:absolute;inset:0;z-index:2000;background:rgba(0,0,0,0.85);align-items:center;justify-content:center;">
<div style="color:#eee;font-family:sans-serif;font-size:18px;text-align:center;padding:32px;white-space:pre-line;" id="auth-msg">Wird geladen…</div>
</div>
<!-- top bar: username + hamburger (admin only) -->
<div id="top-bar">
<div id="user-label"></div>
<button id="menu-btn" class="btn" onclick="toggleMenu()">☰</button>
</div>
<!-- legend -->
<div id="legend">
<div class="legend-row"><div class="legend-dot" style="background:#fff;border-color:#555;box-shadow:0 0 0 1px rgba(0,0,0,0.3)"></div> Besucht</div>
<div class="legend-row"><div class="legend-dot" style="background:#222;border-color:#fff"></div> Nicht möglich</div>
<div class="legend-row"><div class="legend-dot" style="background:#3a7bd5;border-color:#f1c40f;box-shadow:0 0 0 1px #f1c40f"></div> Kommentar</div>
</div>
<div id="menu-dropdown">
<button onclick="menuAction('place')">Ort Hinzufügen</button>
<button id="menu-route" onclick="menuAction('route')" style="display:none">Route zuweisen</button>
<button id="menu-invite" onclick="menuAction('invite')" style="display:none">Einladen</button>
</div>
<!-- Crosshair -->
<div id="crosshair">⊕</div>
<!-- Placement action bar -->
<div id="place-bar" class="sheet">
<button id="place-cancel-btn" class="btn" onclick="cancelPlacement()">✕</button>
<button id="place-confirm-btn" class="btn" onclick="confirmPlacement()">Hier platzieren →</button>
</div>
<!-- Placement form sheet -->
<div id="place-sheet" class="sheet">
<h3>Ort Hinzufügen</h3>
<input type="text" id="place-name" placeholder="Name (erforderlich)" autocomplete="off" autocorrect="off"/>
<input type="text" id="place-comment" placeholder="Kommentar (optional)" autocomplete="off"/>
<button id="place-visited-btn" class="btn" onclick="submitPlace(1)">Besucht ✓</button>
<button id="place-na-btn" class="btn" onclick="submitPlace(2)">Nicht möglich 🚫</button>
<button id="place-comment-btn" class="btn" onclick="submitPlace(0)">Kommentar 💬</button>
<button id="place-only-btn" class="btn" onclick="submitPlace(null)">Nur platzieren</button>
<button id="place-sheet-cancel" class="btn" onclick="cancelPlaceSheet()">Abbrechen</button>
</div>
<!-- Delete confirm sheet -->
<div id="delete-sheet" class="sheet">
<p>Ort wirklich löschen?<br/><b id="delete-name"></b></p>
<button id="delete-confirm-btn" class="btn" onclick="confirmDelete()">Ja, löschen</button>
<button id="delete-cancel-btn" class="btn" onclick="closeDeleteSheet()">Abbrechen</button>
</div>
<!-- Route picker sheet -->
<div id="route-sheet" class="sheet">
<div id="route-sheet-title">Route zuweisen</div>
<ul id="route-list"></ul>
<button id="new-route-btn" class="btn" onclick="createRoute()">+ Neue Route</button>
<button id="sheet-cancel-btn" class="btn" onclick="closeRouteSheet()">Abbrechen</button>
</div>
<!-- Draw bar -->
<div id="draw-bar" class="sheet">
<div id="draw-color-dot"></div>
<div id="draw-label">Bereich auswählen</div>
<div id="draw-count">0</div>
<button id="finish-btn" class="btn" onclick="finishDrawing()">Fertig ✓</button>
<button id="draw-cancel-btn" class="btn" onclick="cancelDrawing()">✕</button>
</div>
<!-- Besucht sheet -->
<div id="visit-sheet" class="sheet">
<h3 id="visit-sheet-name"></h3>
<div id="visit-sheet-street"></div>
<input type="text" id="visit-comment" placeholder="Kommentar (optional)" autocomplete="off"/>
<button id="visit-submit-btn" class="btn" onclick="submitVisit(1)">Besucht ✓</button>
<button id="visit-na-btn" class="btn" onclick="submitVisit(2)" style="background:#222;color:#fff;padding:12px 24px;font-size:16px;width:100%;margin-bottom:8px;">Nicht möglich 🚫</button>
<button id="visit-comment-btn" class="btn" onclick="submitVisit(0)" style="background:#e6a800;color:#fff;padding:12px 24px;font-size:16px;width:100%;margin-bottom:8px;">Kommentar 💬</button>
<button id="visit-cancel-btn" class="btn" onclick="closeVisitSheet()">Abbrechen</button>
</div>
<!-- Einladen sheet -->
<div id="invite-sheet" class="sheet">
<h3>Einladen</h3>
<input type="text" id="invite-username" placeholder="Benutzername" autocomplete="off" autocorrect="off" autocapitalize="off"/>
<label><input type="checkbox" id="invite-is-admin"/> Admin</label>
<button id="invite-submit-btn" class="btn" onclick="submitInvite()">Einladen</button>
<button id="invite-cancel-btn" class="btn" onclick="closeInviteSheet()">Abbrechen</button>
</div>
<!-- Einladen waiting state -->
<div id="invite-waiting" class="sheet">
<div style="padding:20px 16px 0">
<div id="invite-qr"><img id="invite-qr-img" src="" alt="QR Code"/></div>
<div id="invite-url-box"></div>
<button id="invite-copy-btn" class="btn" onclick="copyInviteUrl()">Link kopieren</button>
<div id="invite-status">⏳ Warte auf Scan…</div>
</div>
<button id="invite-wait-cancel-btn" class="btn" onclick="cancelInviteWait()">Abbrechen</button>
</div>
<!-- Route selected toast -->
<div id="route-toast">
<div id="toast-dot"></div>
<div id="toast-label"></div>
<button id="toast-close" class="btn" onclick="dismissToast()">×</button>
</div>
<script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js"></script>
<script src="https://unpkg.com/@geoman-io/leaflet-geoman-free@2.19.2/dist/leaflet-geoman.min.js"></script>
<script>
var map = L.map('map', { zoomControl: true }).setView([48.3705, 10.8978], 13);
L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
maxZoom: 19,
attribution: '© <a href="https://openstreetmap.org/copyright">OpenStreetMap</a>'
}).addTo(map);
// ── state ──────────────────────────────────────────────────────────────────
var locations = []; // apiLocation[]
var routes = []; // apiRoute[]
var markers = {}; // location id → L.CircleMarker
var selected = new Set(); // location indices currently selected for drawing
var activeRouteId = null; // route being drawn into
var activeRouteColor = null;
// ── load state ─────────────────────────────────────────────────────────────
var pollingStarted = false;
function loadState() {
return fetch('/api/state')
.then(function(r) { return r.json(); })
.then(function(state) {
locations = state.locations || [];
routes = state.routes || [];
renderMarkers();
if (!pollingStarted) {
pollingStarted = true;
visitsSince = Math.floor(Date.now() / 1000);
pollUpdates();
}
});
}
// ── markers ────────────────────────────────────────────────────────────────
function markerFillColor(loc) {
if (loc.visited) return '#fff'; // white = besucht
if (loc.not_available) return '#222'; // black = nicht möglich
return loc.color || '#3a7bd5'; // route color or default blue
}
function markerBorderColor(loc) {
if (loc.has_comment) return '#f1c40f'; // yellow = has comment
if (loc.visited) return loc.color || '#555'; // route color border for visited
return '#fff';
}
function markerStyle(loc, highlight) {
var radius = (loc.route_id ? 8 : 7)
+ (loc.visited || loc.not_available || loc.has_comment ? 1 : 0)
+ (highlight ? 4 : 0);
return {
radius: radius,
fillColor: markerFillColor(loc),
color: markerBorderColor(loc),
weight: loc.has_comment ? 3 : 2,
fillOpacity: 0.95,
opacity: 1,
};
}
function relativeTime(unixTs) {
var secs = Math.floor(Date.now() / 1000) - unixTs;
if (secs < 60) return 'gerade eben';
if (secs < 3600) return 'vor ' + Math.floor(secs/60) + ' Min.';
if (secs < 86400) return 'vor ' + Math.floor(secs/3600) + ' Std.';
return 'vor ' + Math.floor(secs/86400) + ' Tag(en)';
}
function buildPopupHTML(loc) {
var html = '<b>' + loc.name + '</b>';
if (loc.created_by) {
html += '<br/><small style="color:#888">Hinzugefügt von ' + loc.created_by + '</small>';
} else if (loc.street) {
html += '<br/>' + loc.street +
'<br/><small>' + loc.postal_code + ' ' + loc.district + '</small>';
}
if (loc.visits && loc.visits.length > 0) {
html += '<hr style="margin:6px 0;border-color:#ddd"/>';
loc.visits.forEach(function(v) {
var icon = v.visit_type === 1 ? '✓' : v.visit_type === 2 ? '🚫' : '💬';
html += '<div style="font-size:12px;margin-bottom:2px">' + icon + ' <b>' + v.username + '</b> — ' + relativeTime(v.visited_at);
if (v.comment) html += '<br/><span style="color:#666">"' + v.comment + '"</span>';
html += '</div>';
});
}
html += '<br/><button onclick="openVisitSheet(' + loc.id + ')" ' +
'style="margin-top:4px;padding:6px 12px;background:#4a9;color:#fff;border:none;border-radius:4px;cursor:pointer;font-size:13px">' +
'Eintrag hinzufügen</button>';
if (isAdmin) {
html += ' <button onclick="openDeleteSheet(' + loc.id + ',\'' + loc.name.replace(/'/g,"\\'") + '\')" ' +
'style="margin-top:4px;padding:6px 12px;background:#333;color:#aaa;border:none;border-radius:4px;cursor:pointer;font-size:13px">' +
'Löschen</button>';
}
return html;
}
function addMarker(loc) {
if (loc.lat === null || loc.lon === null) return;
var m = L.circleMarker([loc.lat, loc.lon], markerStyle(loc, false));
m.bindPopup(buildPopupHTML(loc), { maxWidth: 260 });
m.on('click', function() { onMarkerClick(loc); });
m.addTo(map);
markers[loc.id] = m;
}
function renderMarkers() {
Object.values(markers).forEach(function(m) { m.remove(); });
markers = {};
locations.forEach(function(loc) { addMarker(loc); });
}
function onMarkerClick(loc) {
// popup opens automatically via Leaflet click
}
function highlightRoute(routeId) {
locations.forEach(function(loc) {
if (!markers[loc.id]) return;
markers[loc.id].setStyle(markerStyle(loc, loc.route_id === routeId));
});
}
function clearHighlight() {
locations.forEach(function(loc) {
if (!markers[loc.id]) return;
markers[loc.id].setStyle(markerStyle(loc, false));
});
}
// ── route toast ────────────────────────────────────────────────────────────
function showRouteToast(routeId) {
var route = routes.find(function(r) { return r.id === routeId; });
if (!route) return;
var count = locations.filter(function(l) { return l.route_id === routeId; }).length;
document.getElementById('toast-dot').style.background = route.color;
document.getElementById('toast-label').textContent = 'Route ' + routeId + ' · ' + count + ' Orte';
document.getElementById('route-toast').classList.add('open');
highlightRoute(routeId);
}
function dismissToast() {
document.getElementById('route-toast').classList.remove('open');
clearHighlight();
}
// ── route sheet ────────────────────────────────────────────────────────────
// ── hamburger menu ─────────────────────────────────────────────────────────
function toggleMenu() {
var dd = document.getElementById('menu-dropdown');
dd.classList.toggle('open');
}
function closeMenu() {
document.getElementById('menu-dropdown').classList.remove('open');
}
function menuAction(action) {
closeMenu();
if (action === 'place') startPlacement();
if (action === 'route') openRouteSheet();
if (action === 'invite') openInviteSheet();
}
// close dropdown when tapping outside
document.addEventListener('click', function(e) {
var btn = document.getElementById('menu-btn');
var dd = document.getElementById('menu-dropdown');
if (!btn.contains(e.target) && !dd.contains(e.target)) closeMenu();
});
function openRouteSheet() {
dismissToast();
renderRouteList();
document.getElementById('route-sheet').classList.add('open');
}
function closeRouteSheet() {
document.getElementById('route-sheet').classList.remove('open');
}
function renderRouteList() {
var ul = document.getElementById('route-list');
ul.innerHTML = '';
routes.forEach(function(route) {
var li = document.createElement('li');
li.innerHTML =
'<div class="route-dot" style="background:' + route.color + '"></div>' +
'<div class="route-label">Route ' + route.id + '</div>' +
'<div class="route-count">' + route.count + ' Orte</div>';
li.onclick = function() { pickRoute(route.id, route.color); };
ul.appendChild(li);
});
}
function pickRoute(routeId, color) {
closeRouteSheet();
startDrawing(routeId, color);
}
function createRoute() {
fetch('/api/routes', { method: 'POST' })
.then(function(r) { return r.json(); })
.then(function(route) {
routes.push({ id: route.id, color: route.color, count: 0 });
closeRouteSheet();
startDrawing(route.id, route.color);
});
}
// ── drawing ────────────────────────────────────────────────────────────────
function startDrawing(routeId, color) {
activeRouteId = routeId;
activeRouteColor = color;
selected.clear();
document.getElementById('draw-color-dot').style.background = color;
document.getElementById('draw-count').textContent = '0';
document.getElementById('draw-bar').classList.add('open');
document.getElementById('top-bar').classList.remove('visible');
map.pm.setGlobalOptions({ continueDrawing: false, snappable: false,
pathOptions: { color: color, fillColor: color, fillOpacity: 0.15 } });
map.pm.enableDraw('Polygon');
}
map.on('pm:create', function(e) {
selectWithinLayer(e.layer);
map.removeLayer(e.layer);
// re-arm for another polygon pass
map.pm.enableDraw('Polygon');
});
function finishDrawing() {
// auto-close in-progress polygon
var draw = map.pm.Draw.Polygon;
if (draw && draw._finishShape) draw._finishShape();
map.pm.disableDraw();
if (selected.size === 0) { cancelDrawing(); return; }
var ids = Array.from(selected).map(function(idx) { return locations[idx].id; });
fetch('/api/assign', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ route_id: activeRouteId, location_ids: ids }),
}).then(function() {
return loadState();
}).then(function() {
selected.clear();
activeRouteId = null;
activeRouteColor = null;
document.getElementById('draw-bar').classList.remove('open');
document.getElementById('top-bar').classList.add('visible');
});
}
function cancelDrawing() {
map.pm.disableDraw();
selected.clear();
// revert selected markers to their actual style
renderMarkers();
activeRouteId = null;
activeRouteColor = null;
document.getElementById('draw-bar').classList.remove('open');
document.getElementById('top-bar').classList.add('visible');
}
function selectWithinLayer(layer) {
var latlngs = layer.getLatLngs ? layer.getLatLngs() : null;
if (!latlngs) return;
var ring = (latlngs[0] && latlngs[0][0] && latlngs[0][0].lat !== undefined)
? latlngs[0] : latlngs;
locations.forEach(function(loc, i) {
if (loc.lat === null || loc.lon === null) return;
if (pointInPolygon([loc.lat, loc.lon], ring)) {
selected.add(i);
// preview the route color on the marker
if (markers[loc.id]) {
markers[loc.id].setStyle({
fillColor: activeRouteColor, color: '#fff',
radius: 9, fillOpacity: 0.95, weight: 2, opacity: 1,
});
}
}
});
document.getElementById('draw-count').textContent = selected.size;
}
function pointInPolygon(point, polygon) {
var x = point[1], y = point[0];
var inside = false;
for (var i = 0, j = polygon.length - 1; i < polygon.length; j = i++) {
var xi = polygon[i].lng, yi = polygon[i].lat;
var xj = polygon[j].lng, yj = polygon[j].lat;
if (((yi > y) !== (yj > y)) && (x < (xj - xi) * (y - yi) / (yj - yi) + xi))
inside = !inside;
}
return inside;
}
// ── besucht ────────────────────────────────────────────────────────────────
var visitLocationId = null;
function openVisitSheet(locId) {
// close any open leaflet popup
map.closePopup();
visitLocationId = locId;
var loc = locations.find(function(l) { return l.id === locId; });
document.getElementById('visit-sheet-name').textContent = loc ? loc.name : '';
document.getElementById('visit-sheet-street').textContent = loc ? loc.street : '';
document.getElementById('visit-comment').value = '';
document.getElementById('visit-sheet').classList.add('open');
setTimeout(function() { document.getElementById('visit-comment').focus(); }, 100);
}
function closeVisitSheet() {
document.getElementById('visit-sheet').classList.remove('open');
visitLocationId = null;
}
// applyVisit merges a visit record into a location object and updates its marker.
// Deduplicates by (username, visited_at).
function applyVisit(loc, v) {
if (!loc.visits) loc.visits = [];
var exists = loc.visits.some(function(x) {
return x.username === v.username && x.visited_at === v.visited_at;
});
if (!exists) loc.visits.unshift(v);
if (v.visit_type === 1) loc.visited = true;
if (v.visit_type === 2) loc.not_available = true;
if (v.comment) loc.has_comment = true;
var m = markers[loc.id];
if (m) {
m.setStyle(markerStyle(loc, false));
m.setPopupContent(buildPopupHTML(loc));
}
}
function submitVisit(visitType) {
if (!visitLocationId) return;
var comment = document.getElementById('visit-comment').value.trim();
if (visitType === 0 && !comment) return;
fetch('/api/visits', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ location_id: visitLocationId, comment: comment, visit_type: visitType }),
}).then(function() {
var loc = locations.find(function(l) { return l.id === visitLocationId; });
if (loc) applyVisit(loc, { username: currentUsername, visited_at: Math.floor(Date.now()/1000), comment: comment, visit_type: visitType });
closeVisitSheet();
});
}
// ── long-poll updates ───────────────────────────────────────────────────────
var visitsSince = Math.floor(Date.now() / 1000);
var currentUsername = '';
var updatesAbortController = null;
function pollUpdates() {
updatesAbortController = new AbortController();
fetch('/api/updates?since=' + visitsSince, { signal: updatesAbortController.signal })
.then(function(r) { return r.json(); })
.then(function(data) {
if (data.visits && data.visits.length > 0) {
data.visits.forEach(function(v) {
var loc = locations.find(function(l) { return l.id === v.location_id; });
if (loc) applyVisit(loc, v);
if (v.visited_at > visitsSince) visitsSince = v.visited_at;
});
}
if (data.route_changes && data.route_changes.length > 0) {
var routeChangeTime = Math.floor(Date.now() / 1000);
if (routeChangeTime > visitsSince) visitsSince = routeChangeTime;
data.route_changes.forEach(function(rc) {
var loc = locations.find(function(l) { return l.id === rc.location_id; });
if (loc) {
loc.route_id = rc.route_id;
loc.color = rc.color || null;
if (markers[loc.id]) {
markers[loc.id].setStyle(markerStyle(loc, false));
markers[loc.id].setPopupContent(buildPopupHTML(loc));
}
}
});
renderRouteList();
}
if (data.new_locations && data.new_locations.length > 0) {
var newLocTime = Math.floor(Date.now() / 1000);
if (newLocTime > visitsSince) visitsSince = newLocTime;
data.new_locations.forEach(function(loc) {
// skip if we already have it (e.g. the creator)
if (locations.some(function(l) { return l.id === loc.id; })) return;
loc.visits = loc.visits || [];
locations.push(loc);
addMarker(loc);
});
}
pollUpdates(); // re-arm immediately
})
.catch(function(e) {
if (e.name === 'AbortError') return;
setTimeout(pollUpdates, 3000);
});
}
// ── einladen ───────────────────────────────────────────────────────────────
var inviteShareURL = '';
var inviteAbortController = null;
function openInviteSheet() {
document.getElementById('invite-username').value = '';
document.getElementById('invite-is-admin').checked = false;
document.getElementById('invite-sheet').classList.add('open');
document.getElementById('invite-waiting').classList.remove('open');
setTimeout(function() { document.getElementById('invite-username').focus(); }, 100);
}
function closeInviteSheet() {
document.getElementById('invite-sheet').classList.remove('open');
}
function submitInvite() {
var username = document.getElementById('invite-username').value.trim();
if (!username) return;
var isAdminInvite = document.getElementById('invite-is-admin').checked;
fetch('/api/invite', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ username: username, is_admin: isAdminInvite }),
}).then(function(r) { return r.json(); })
.then(function(data) {
inviteShareURL = data.share_url;
closeInviteSheet();
showInviteWaiting(username, data.since, data.qr_url);
});
}
function showInviteWaiting(username, since, qrURL) {
document.getElementById('invite-url-box').textContent = inviteShareURL;
document.getElementById('invite-qr-img').src = '/api/qr?url=' + encodeURIComponent(qrURL);
document.getElementById('invite-status').textContent = '⏳ Warte auf Verbindung…';
document.getElementById('invite-waiting').classList.add('open');
inviteAbortController = new AbortController();
fetch('/api/invite/status?username=' + encodeURIComponent(username) + '&since=' + since, {
signal: inviteAbortController.signal,
}).then(function(r) { return r.json(); })
.then(function() {
// scanned or timed out — reset silently either way
document.getElementById('invite-waiting').classList.remove('open');
inviteAbortController = null;
}).catch(function(e) {
if (e.name !== 'AbortError') console.error(e);
});
}
function cancelInviteWait() {
if (inviteAbortController) { inviteAbortController.abort(); inviteAbortController = null; }
document.getElementById('invite-waiting').classList.remove('open');
}
function copyInviteUrl() {
navigator.clipboard.writeText(inviteShareURL).then(function() {
var btn = document.getElementById('invite-copy-btn');
btn.textContent = 'Kopiert ✓';
setTimeout(function() { btn.textContent = 'Link kopieren'; }, 2000);
});
}
// ── ort löschen ────────────────────────────────────────────────────────────
var deleteLocationId = null;
function openDeleteSheet(locId, name) {
map.closePopup();
deleteLocationId = locId;
document.getElementById('delete-name').textContent = name;
document.getElementById('delete-sheet').classList.add('open');
}
function closeDeleteSheet() {
document.getElementById('delete-sheet').classList.remove('open');
deleteLocationId = null;
}
function confirmDelete() {
if (!deleteLocationId) return;
fetch('/api/locations/' + deleteLocationId, { method: 'DELETE' })
.then(function(r) {
if (!r.ok) { alert('Fehler beim Löschen'); return; }
// remove from local state
var idx = locations.findIndex(function(l) { return l.id === deleteLocationId; });
if (idx >= 0) locations.splice(idx, 1);
if (markers[deleteLocationId]) { markers[deleteLocationId].remove(); delete markers[deleteLocationId]; }
closeDeleteSheet();
});
}
// ── ort hinzufügen ─────────────────────────────────────────────────────────
var placeLat = 0, placeLon = 0;
function startPlacement() {
document.getElementById('crosshair').classList.add('active');
document.getElementById('place-bar').classList.add('open');
document.getElementById('top-bar').classList.remove('visible');
}
function cancelPlacement() {
document.getElementById('crosshair').classList.remove('active');
document.getElementById('place-bar').classList.remove('open');
document.getElementById('top-bar').classList.add('visible');
}
function confirmPlacement() {
var center = map.getCenter();
placeLat = center.lat;
placeLon = center.lng;
document.getElementById('crosshair').classList.remove('active');
document.getElementById('place-bar').classList.remove('open');
document.getElementById('place-name').value = '';
document.getElementById('place-comment').value = '';
document.getElementById('place-sheet').classList.add('open');
setTimeout(function() { document.getElementById('place-name').focus(); }, 100);
}
function cancelPlaceSheet() {
document.getElementById('place-sheet').classList.remove('open');
document.getElementById('top-bar').classList.add('visible');
}
function submitPlace(visitType) {
var name = document.getElementById('place-name').value.trim();
if (!name) { document.getElementById('place-name').focus(); return; }
var comment = document.getElementById('place-comment').value.trim();
if (visitType === 0 && !comment) { document.getElementById('place-comment').focus(); return; }
var body = { name: name, lat: placeLat, lon: placeLon, comment: comment };
if (visitType !== null) body.visit_type = visitType;
fetch('/api/locations', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify(body),
}).then(function(r) { return r.json(); })
.then(function(loc) {
// add to local state and render marker immediately
loc.visits = loc.visits || [];
locations.push(loc);
addMarker(loc);
document.getElementById('place-sheet').classList.remove('open');
document.getElementById('top-bar').classList.add('visible');
// fly to the new marker and open its popup
map.setView([loc.lat, loc.lon], Math.max(map.getZoom(), 16));
if (markers[loc.id]) markers[loc.id].openPopup();
});
}
// ── auth ───────────────────────────────────────────────────────────────────
var isAdmin = false;
function setUserLabel(username) {
currentUsername = username;
document.getElementById('user-label').textContent = 'Hi ' + username;
}
function showTopBar(admin) {
document.getElementById('top-bar').classList.add('visible');
// menu-btn always visible — all users get "Ort Hinzufügen"
if (admin) {
document.getElementById('menu-route').style.display = '';
document.getElementById('menu-invite').style.display = '';
}
}
function showOverlay(msg) {
document.getElementById('auth-overlay').style.display = 'flex';
document.getElementById('auth-msg').textContent = msg;
}
function hideOverlay() {
document.getElementById('auth-overlay').style.display = 'none';
}
function stripWhoParam() {
var url = new URL(window.location.href);
if (url.searchParams.has('who')) {
url.searchParams.delete('who');
history.replaceState(null, '', url.pathname + (url.search === '?' ? '' : url.search));
}
}
function boot() {
var whoParam = new URL(window.location.href).searchParams.get('who');
// try existing session first
fetch('/api/me').then(function(r) {
if (r.ok) return r.json();
return { ok: false };
}).then(function(me) {
if (me.ok) {
isAdmin = me.is_admin;
stripWhoParam();
hideOverlay();
setUserLabel(me.username);
showTopBar(isAdmin);
loadState();
return;
}
// no valid session — try ?who=
if (!whoParam) {
showOverlay('Du bist nicht eingeloggt.\nBitte jemanden um einen Zugangslink.');
return;
}
var decoded;
try {
decoded = JSON.parse(atob(whoParam.replace(/-/g,'+').replace(/_/g,'/')));
} catch(e) {
showOverlay('Ungültiger Zugangslink.');
return;
}
fetch('/api/login', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ username: decoded.username, token: decoded.token }),
}).then(function(r) {
if (!r.ok) {
r.text().then(function(msg) {
showOverlay(msg.trim() || 'Ungültiger Zugangslink.');
});
return null;
}
return r.json();
}).then(function(data) {
if (!data) return;
isAdmin = data.is_admin;
stripWhoParam();
hideOverlay();
setUserLabel(data.username);
showTopBar(isAdmin);
loadState();
});
});
}
// ── boot ───────────────────────────────────────────────────────────────────
boot();
</script>
</body>
</html>`
// ── auth helpers ─────────────────────────────────────────────────────────────
func randomBase64(bytes int) string {
b := make([]byte, bytes)
if _, err := rand.Read(b); err != nil {
log.Panicf("rand: %v", err)
}
return base64.URLEncoding.EncodeToString(b)
}
// makeInviteToken creates a token in invite_tokens and returns the ?who= URL.
func makeInviteToken(db *sql.DB, baseURL, username string, isAdmin bool, ttl time.Duration) string {
token := randomBase64(24) // 192 bits
now := time.Now().Unix()
isAdminInt := 0
if isAdmin {
isAdminInt = 1
}
mustExec(db,
`INSERT INTO invite_tokens (token, username, is_admin, created_at, expires_at) VALUES (?,?,?,?,?)`,
token, username, isAdminInt, now, now+int64(ttl.Seconds()),
)
who := base64.URLEncoding.EncodeToString([]byte(`{"username":"` + username + `","token":"` + token + `"}`))
return strings.TrimRight(baseURL, "/") + "/?who=" + who
}
// setSessionCookie writes the session cookie with a 1-year MaxAge.
func setSessionCookie(w http.ResponseWriter, sessionID string) {
http.SetCookie(w, &http.Cookie{
Name: "session",
Value: sessionID,
Path: "/",
HttpOnly: true,
SameSite: http.SameSiteLaxMode,
MaxAge: 365 * 24 * 60 * 60, // 1 year
})
}
// requireSession checks the session cookie and returns (username, isAdmin, ok).
// If ok is false it has already written a 401 response.
func requireSession(db *sql.DB, w http.ResponseWriter, r *http.Request) (string, bool, bool) {
cookie, err := r.Cookie("session")
if err != nil {
http.Error(w, "unauthorized", 401)
return "", false, false
}
var username string
var isAdmin int
err = db.QueryRow(`SELECT username, is_admin FROM sessions WHERE session_id = ?`, cookie.Value).
Scan(&username, &isAdmin)
if err != nil {
http.Error(w, "unauthorized", 401)
return "", false, false
}
// Refresh the cookie on every authenticated request so it stays permanent.
setSessionCookie(w, cookie.Value)
return username, isAdmin == 1, true
}
// requireAdmin checks session and admin flag; writes 403 if not admin.
func requireAdmin(db *sql.DB, w http.ResponseWriter, r *http.Request) bool {
_, isAdmin, ok := requireSession(db, w, r)
if !ok {
return false
}
if !isAdmin {
http.Error(w, "forbidden", 403)
return false
}
return true
}
var routePalette = []string{
"#f4a261", "#457b9d", "#8338ec", "#c77dff",
"#ffbe0b", "#4cc9f0", "#118ab2", "#a8dadc",
}
type apiVisit struct {
Username string `json:"username"`
VisitedAt int64 `json:"visited_at"`
Comment string `json:"comment"`
VisitType int `json:"visit_type"` // 0=comment, 1=visited ok, 2=nicht möglich
}
type apiLocation struct {
ID int `json:"id"`
Name string `json:"name"`
Street string `json:"street"`
PostalCode string `json:"postal_code"`
District string `json:"district"`
Lat *float64 `json:"lat"`
Lon *float64 `json:"lon"`
RouteID *int `json:"route_id"`
Color *string `json:"color"`
Visited bool `json:"visited"`
NotAvailable bool `json:"not_available"`
HasComment bool `json:"has_comment"`
Visits []apiVisit `json:"visits"`
CreatedBy *string `json:"created_by"`
}
type apiRoute struct {
ID int `json:"id"`
Color string `json:"color"` // computed from id, not stored
Count int `json:"count"`
}
func routeColor(id int) string {
return routePalette[(id-1)%len(routePalette)]
}
type apiState struct {
Locations []apiLocation `json:"locations"`
Routes []apiRoute `json:"routes"`
}
func queryState(db *sql.DB) (apiState, error) {
var state apiState
rows, err := db.Query(`
SELECT l.id, l.name, COALESCE(l.street,''),
COALESCE(l.postal_code,''), COALESCE(l.district,''),
l.lat, l.lon, l.route_id, l.created_by
FROM locations l
ORDER BY l.id
`)
if err != nil {
return state, err
}
defer rows.Close()
for rows.Next() {
var l apiLocation
if err := rows.Scan(&l.ID, &l.Name, &l.Street, &l.PostalCode, &l.District,
&l.Lat, &l.Lon, &l.RouteID, &l.CreatedBy); err != nil {
return state, err
}
if l.RouteID != nil {
c := routeColor(*l.RouteID)
l.Color = &c
}
state.Locations = append(state.Locations, l)
}
if err := rows.Err(); err != nil {
return state, err
}
// load all visits, newest first, and attach to locations
vrows, err := db.Query(`
SELECT location_id, username, visited_at, COALESCE(comment,''), visit_type
FROM visits ORDER BY visited_at DESC
`)
if err != nil {
return state, err
}
defer vrows.Close()
locIdx := make(map[int]int, len(state.Locations))
for i, l := range state.Locations {
locIdx[l.ID] = i
}
for vrows.Next() {
var locID int
var v apiVisit
if err := vrows.Scan(&locID, &v.Username, &v.VisitedAt, &v.Comment, &v.VisitType); err != nil {
return state, err
}
if i, ok := locIdx[locID]; ok {
state.Locations[i].Visits = append(state.Locations[i].Visits, v)
if v.VisitType == 1 {
state.Locations[i].Visited = true
}
if v.VisitType == 2 {
state.Locations[i].NotAvailable = true
}
if v.Comment != "" {
state.Locations[i].HasComment = true
}
}
}
if err := vrows.Err(); err != nil {
return state, err
}
rrows, err := db.Query(`
SELECT r.id, COUNT(l.id)
FROM routes r
LEFT JOIN locations l ON l.route_id = r.id
GROUP BY r.id ORDER BY r.id
`)
if err != nil {
return state, err
}
defer rrows.Close()
for rrows.Next() {
var r apiRoute
if err := rrows.Scan(&r.ID, &r.Count); err != nil {
return state, err
}
r.Color = routeColor(r.ID)
state.Routes = append(state.Routes, r)
}
if err := rrows.Err(); err != nil {
return state, err
}
return state, nil
}
func writeJSON(w http.ResponseWriter, v any) {
b, err := json.Marshal(v)
if err != nil {
http.Error(w, err.Error(), 500)
return
}
w.Header().Set("Content-Type", "application/json")
w.Write(b)
}
const defaultBaseURL = "https://rolery.tail4db08.ts.net"
// startBackupLoop runs a goroutine that takes a VACUUM INTO backup every hour.
// Backups are written to <dbDir>/backups/modular-plakate-<timestamp>.db.
func startBackupLoop(db *sql.DB, dbPath string) {
backupDir := filepath.Join(filepath.Dir(dbPath), "backups")
if err := os.MkdirAll(backupDir, 0755); err != nil {
log.Printf("backup: failed to create backup dir %q: %v", backupDir, err)
return
}
go func() {
for {
time.Sleep(1 * time.Hour)
ts := time.Now().Format("20060102-150405")
dest := filepath.Join(backupDir, "modular-plakate-"+ts+".db")
if _, err := db.Exec(`VACUUM INTO ?`, dest); err != nil {
log.Printf("backup: VACUUM INTO %q failed: %v", dest, err)
} else {
log.Printf("backup: wrote %s", dest)
}
}
}()
}
func cmdServe(dbPath, baseURL, addr string) {
db := openDB(dbPath)
startBackupLoop(db, dbPath)
// clean up stale config passwords from old auth scheme
mustExec(db, `DELETE FROM config WHERE key IN ('password_user','password_admin')`)
exe, _ := os.Executable()
if exe == "" {
exe = "modular-flyer"
}
absDB, _ := filepath.Abs(dbPath)
if absDB == "" {
absDB = dbPath
}
fmt.Printf("To generate an admin login link, run:\n %s gen-link --admin --base-url %s %s\n", exe, baseURL, absDB)
// compute ETag from the HTML template content — constant per binary run
sum := sha256.Sum256([]byte(mapHTML))
htmlETag := fmt.Sprintf(`"%x"`, sum[:8])
pageBytes := []byte(mapHTML)
// GET / — serve the map page
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
if r.Header.Get("If-None-Match") == htmlETag {
w.WriteHeader(http.StatusNotModified)
return
}
w.Header().Set("Content-Type", "text/html; charset=utf-8")
w.Header().Set("ETag", htmlETag)
w.Header().Set("Cache-Control", "no-cache")
w.Write(pageBytes)
})
// POST /api/login — {username, token} → sets session cookie
http.HandleFunc("/api/login", func(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodPost {
http.Error(w, "method not allowed", 405)
return
}
var req struct {
Username string `json:"username"`
Token string `json:"token"`
}
if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
http.Error(w, err.Error(), 400)
return
}
var isAdminInt int
var expiresAt int64
var usedAt sql.NullInt64
err := db.QueryRow(
`SELECT is_admin, expires_at, used_at FROM invite_tokens WHERE token=? AND username=?`,
req.Token, req.Username,
).Scan(&isAdminInt, &expiresAt, &usedAt)
if err != nil {
http.Error(w, "Ungültiger Zugangslink.", 401)
return
}
if usedAt.Valid {
http.Error(w, "Link bereits verwendet.", 401)
return
}
if time.Now().Unix() > expiresAt {
http.Error(w, "Link abgelaufen.", 401)
return
}
// mark token used
mustExec(db, `UPDATE invite_tokens SET used_at=? WHERE token=?`, time.Now().Unix(), req.Token)
// invalidate caller's existing session (if any)
if existing, err := r.Cookie("session"); err == nil {
mustExec(db, `DELETE FROM sessions WHERE session_id = ?`, existing.Value)
}
sessionID := randomBase64(32) // 256 bits
mustExec(db, `INSERT INTO sessions (session_id, username, is_admin, created_at) VALUES (?,?,?,?)`,
sessionID, req.Username, isAdminInt, time.Now().Unix())
setSessionCookie(w, sessionID)
writeJSON(w, map[string]any{"ok": true, "is_admin": isAdminInt == 1, "username": req.Username})
})
// GET /api/me — returns current session info
http.HandleFunc("/api/me", func(w http.ResponseWriter, r *http.Request) {
username, isAdmin, ok := requireSession(db, w, r)
if !ok {
return
}
writeJSON(w, map[string]any{"ok": true, "username": username, "is_admin": isAdmin})
})
// GET /api/state — all locations + routes (requires session)
http.HandleFunc("/api/state", func(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodGet {
http.Error(w, "method not allowed", 405)
return
}
if _, _, ok := requireSession(db, w, r); !ok {
return
}
state, err := queryState(db)
if err != nil {
http.Error(w, err.Error(), 500)
return
}
writeJSON(w, state)
})
// POST /api/routes — create a new route (admin only)
http.HandleFunc("/api/routes", func(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodPost {
http.Error(w, "method not allowed", 405)
return
}
if !requireAdmin(db, w, r) {
return
}
res, err := db.Exec(`INSERT INTO routes DEFAULT VALUES`)
if err != nil {
http.Error(w, err.Error(), 500)
return
}
id, _ := res.LastInsertId()
writeJSON(w, apiRoute{ID: int(id), Color: routeColor(int(id))})
})
// POST /api/assign — {route_id: N, location_ids: [...]} (admin only)
http.HandleFunc("/api/assign", func(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodPost {
http.Error(w, "method not allowed", 405)
return
}
if !requireAdmin(db, w, r) {
return
}
var req struct {
RouteID int `json:"route_id"`
LocationIDs []int `json:"location_ids"`
}
if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
http.Error(w, err.Error(), 400)
return
}
tx, err := db.Begin()
if err != nil {
http.Error(w, err.Error(), 500)
return
}
now := time.Now().Unix()
stmt, err := tx.Prepare(`UPDATE locations SET route_id = ?, route_updated_at = ? WHERE id = ?`)
if err != nil {
tx.Rollback()
http.Error(w, err.Error(), 500)
return
}
defer stmt.Close()
for _, lid := range req.LocationIDs {
if _, err := stmt.Exec(req.RouteID, now, lid); err != nil {
tx.Rollback()
http.Error(w, err.Error(), 500)
return
}
}
if err := tx.Commit(); err != nil {
http.Error(w, err.Error(), 500)
return
}
w.WriteHeader(204)
})
// POST /api/locations — any session, creates a user-placed location
http.HandleFunc("/api/locations", func(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodPost {
http.Error(w, "method not allowed", 405)
return
}
username, _, ok := requireSession(db, w, r)
if !ok {
return
}
var req struct {
Name string `json:"name"`
Lat float64 `json:"lat"`
Lon float64 `json:"lon"`
Comment string `json:"comment"`
VisitType *int `json:"visit_type"` // nil = nur platzieren
}
if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
http.Error(w, err.Error(), 400)
return
}
if req.Name == "" {
http.Error(w, "name required", 400)
return
}
now := time.Now().Unix()
res, err := db.Exec(
`INSERT INTO locations (name, lat, lon, created_by, created_at) VALUES (?,?,?,?,?)`,
req.Name, req.Lat, req.Lon, username, now,
)
if err != nil {
http.Error(w, err.Error(), 500)
return
}
locID, _ := res.LastInsertId()
if req.VisitType != nil {
mustExec(db,
`INSERT INTO visits (location_id, username, visited_at, comment, visit_type) VALUES (?,?,?,?,?)`,
locID, username, now, req.Comment, *req.VisitType,
)
}
// return the full location object
loc := apiLocation{
ID: int(locID),
Name: req.Name,
Lat: &req.Lat,
Lon: &req.Lon,
CreatedBy: &username,
}
if req.VisitType != nil {
v := apiVisit{Username: username, VisitedAt: now, Comment: req.Comment, VisitType: *req.VisitType}
loc.Visits = []apiVisit{v}
if *req.VisitType == 1 {
loc.Visited = true
}
if *req.VisitType == 2 {
loc.NotAvailable = true
}
if req.Comment != "" {
loc.HasComment = true
}
}
writeJSON(w, loc)
})
// DELETE /api/locations/<id> — admin only, deletes a location and its visits
http.HandleFunc("/api/locations/", func(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodDelete {
http.Error(w, "method not allowed", 405)
return
}
if !requireAdmin(db, w, r) {
return
}
idStr := strings.TrimPrefix(r.URL.Path, "/api/locations/")
var id int
if _, err := fmt.Sscanf(idStr, "%d", &id); err != nil || id == 0 {
http.Error(w, "invalid id", 400)
return
}
mustExec(db, `DELETE FROM visits WHERE location_id = ?`, id)
mustExec(db, `DELETE FROM locations WHERE id = ?`, id)
w.WriteHeader(204)
})
// POST /api/visits — any session, records a visit
http.HandleFunc("/api/visits", func(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodPost {
http.Error(w, "method not allowed", 405)
return
}
username, _, ok := requireSession(db, w, r)
if !ok {
return
}
var req struct {
LocationID int `json:"location_id"`
Comment string `json:"comment"`
VisitType int `json:"visit_type"` // 0=comment, 1=visited ok, 2=nicht möglich
}
if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
http.Error(w, err.Error(), 400)
return
}
mustExec(db,
`INSERT INTO visits (location_id, username, visited_at, comment, visit_type) VALUES (?,?,?,?,?)`,
req.LocationID, username, time.Now().Unix(), req.Comment, req.VisitType,
)
w.WriteHeader(204)
})
// GET /api/updates?since=<unix> — long-polls for new visits+route changes, blocks up to 30s
http.HandleFunc("/api/updates", func(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodGet {
http.Error(w, "method not allowed", 405)
return
}
if _, _, ok := requireSession(db, w, r); !ok {
return
}
var since int64
fmt.Sscanf(r.URL.Query().Get("since"), "%d", &since)
type visitUpdate struct {
LocationID int `json:"location_id"`
Username string `json:"username"`
VisitedAt int64 `json:"visited_at"`
Comment string `json:"comment"`
VisitType int `json:"visit_type"`
}
type routeUpdate struct {
LocationID int `json:"location_id"`
RouteID *int `json:"route_id"`
Color string `json:"color"`
}
deadline := time.Now().Add(30 * time.Second)
for time.Now().Before(deadline) {
// check new visits
vrows, err := db.Query(
`SELECT location_id, username, visited_at, COALESCE(comment,''), visit_type
FROM visits WHERE visited_at > ? ORDER BY visited_at ASC`,
since,
)
if err != nil {
http.Error(w, err.Error(), 500)
return
}
var visits []visitUpdate
for vrows.Next() {
var v visitUpdate
vrows.Scan(&v.LocationID, &v.Username, &v.VisitedAt, &v.Comment, &v.VisitType)
visits = append(visits, v)
}
vrows.Close()
// check route assignment changes
rrows, err := db.Query(
`SELECT id, route_id FROM locations WHERE route_updated_at > ?`,
since,
)
if err != nil {
http.Error(w, err.Error(), 500)
return
}
var routeChanges []routeUpdate
for rrows.Next() {
var u routeUpdate
rrows.Scan(&u.LocationID, &u.RouteID)
if u.RouteID != nil {
u.Color = routeColor(*u.RouteID)
}
routeChanges = append(routeChanges, u)
}
rrows.Close()
// check new user-created locations
lrows, err := db.Query(
`SELECT id, name, COALESCE(street,''), COALESCE(postal_code,''),
COALESCE(district,''), lat, lon, route_id, created_by
FROM locations WHERE created_at > ?`,
since,
)
if err != nil {
http.Error(w, err.Error(), 500)
return
}
var newLocs []apiLocation
for lrows.Next() {
var l apiLocation
lrows.Scan(&l.ID, &l.Name, &l.Street, &l.PostalCode, &l.District,
&l.Lat, &l.Lon, &l.RouteID, &l.CreatedBy)
if l.RouteID != nil {
c := routeColor(*l.RouteID)
l.Color = &c
}
newLocs = append(newLocs, l)
}
lrows.Close()
if len(visits) > 0 || len(routeChanges) > 0 || len(newLocs) > 0 {
writeJSON(w, map[string]any{
"visits": visits,
"route_changes": routeChanges,
"new_locations": newLocs,
})
return
}
select {
case <-r.Context().Done():
return
case <-time.After(5 * time.Second):
}
}
writeJSON(w, map[string]any{"visits": []any{}, "route_changes": []any{}, "new_locations": []any{}})
})
// GET /api/qr?url=... — returns a PNG QR code (admin only)
http.HandleFunc("/api/qr", func(w http.ResponseWriter, r *http.Request) {
if !requireAdmin(db, w, r) {
return
}
rawURL := r.URL.Query().Get("url")
if rawURL == "" {
http.Error(w, "missing url", 400)
return
}
png, err := qrcode.Encode(rawURL, qrcode.Medium, 256)
if err != nil {
http.Error(w, err.Error(), 500)
return
}
w.Header().Set("Content-Type", "image/png")
w.Write(png)
})
// POST /api/invite — admin only, returns share_url (12h) + qr_url (5min)
http.HandleFunc("/api/invite", func(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodPost {
http.Error(w, "method not allowed", 405)
return
}
if !requireAdmin(db, w, r) {
return
}
var req struct {
Username string `json:"username"`
IsAdmin bool `json:"is_admin"`
}
if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
http.Error(w, err.Error(), 400)
return
}
since := time.Now().Unix()
shareURL := makeInviteToken(db, baseURL, req.Username, req.IsAdmin, 12*time.Hour)
qrURL := makeInviteToken(db, baseURL, req.Username, req.IsAdmin, 5*time.Minute)
writeJSON(w, map[string]any{
"share_url": shareURL,
"qr_url": qrURL,
"since": since,
})
})
// GET /api/invite/status?username=alice&since=1234567890
// blocks until a new session for that username or client disconnects or 30s elapses
http.HandleFunc("/api/invite/status", func(w http.ResponseWriter, r *http.Request) {
if r.Method != http.MethodGet {
http.Error(w, "method not allowed", 405)
return
}
if !requireAdmin(db, w, r) {
return
}
username := r.URL.Query().Get("username")
sinceStr := r.URL.Query().Get("since")
var since int64
fmt.Sscanf(sinceStr, "%d", &since)
deadline := time.Now().Add(30 * time.Second)
for time.Now().Before(deadline) {
var found int
db.QueryRow(
`SELECT COUNT(*) FROM sessions WHERE username=? AND created_at>?`,
username, since,
).Scan(&found)
if found > 0 {
writeJSON(w, map[string]any{"scanned": true})
return
}
select {
case <-r.Context().Done():
return
case <-time.After(500 * time.Millisecond):
}
}
writeJSON(w, map[string]any{"scanned": false})
})
fmt.Printf("listening on %s\n", addr)
if err := http.ListenAndServe(addr, nil); err != nil {
log.Panicf("listen: %v", err)
}
}
func cmdGenLink(args []string) {
fs := flag.NewFlagSet("gen-link", flag.ExitOnError)
isAdmin := fs.Bool("admin", false, "generate an admin link")
username := fs.String("username", "", "username for the invite (default: 'admin' if --admin)")
baseURL := fs.String("base-url", defaultBaseURL, "base URL for the link")
fs.Parse(args)
if fs.NArg() != 1 {
log.Panicf("usage: modular-flyer gen-link [--admin] [--username <name>] [--base-url <url>] <db>")
}
if *username == "" {
if *isAdmin {
*username = "admin"
} else {
log.Panicf("--username is required for non-admin links")
}
}
db := openDB(fs.Arg(0))
defer db.Close()
url := makeInviteToken(db, *baseURL, *username, *isAdmin, 12*time.Hour)
fmt.Println(url)
}
func main() {
if len(os.Args) < 2 {
fmt.Fprintf(os.Stderr, "usage: modular-flyer <command> [args]\n")
fmt.Fprintf(os.Stderr, "commands:\n")
fmt.Fprintf(os.Stderr, " serve [flags] <db>\n")
fmt.Fprintf(os.Stderr, " gen-link [flags] <db>\n")
os.Exit(1)
}
switch os.Args[1] {
case "serve":
fs := flag.NewFlagSet("serve", flag.ExitOnError)
baseURL := fs.String("base-url", defaultBaseURL, "base URL for invite links")
addr := fs.String("addr", ":8081", "listen address")
fs.Parse(os.Args[2:])
if fs.NArg() != 1 {
log.Panicf("usage: modular-flyer serve [flags] <db>")
}
cmdServe(fs.Arg(0), *baseURL, *addr)
case "gen-link":
cmdGenLink(os.Args[2:])
default:
log.Panicf("unknown command %q", os.Args[1])
}
}
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