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|
// osgameclones-to-sqlite: import osgameclones YAML into SQLite, fetch hero
// images, and render an example HTML page.
//
// Subcommands:
//
// import <osgameclones-dir> <output.db>
// fetch-images <db>
// render-page <db> <output.html>
package main
import (
"database/sql"
"fmt"
"io"
"net/http"
"net/url"
"os"
"path/filepath"
"strings"
"sync"
"time"
"gopkg.in/yaml.v3"
_ "modernc.org/sqlite"
)
// ============================================================================
// Data types
// ============================================================================
type Original struct {
Name string `yaml:"name"`
AltNames []string `yaml:"names"`
External External `yaml:"external"`
Platforms []string `yaml:"platforms"`
Meta Meta `yaml:"meta"`
}
type External struct {
Website string `yaml:"website"`
Wikipedia string `yaml:"wikipedia"`
}
type Meta struct {
Genres []string `yaml:"genres"`
Subgenres []string `yaml:"subgenres"`
Themes []string `yaml:"themes"`
}
type Game struct {
Name string `yaml:"name"`
Originals []string `yaml:"originals"`
Type string `yaml:"type"`
Repo string `yaml:"repo"`
URL string `yaml:"url"`
Feed string `yaml:"feed"`
Development string `yaml:"development"`
Status string `yaml:"status"`
Multiplayer []string `yaml:"multiplayer"`
Content string `yaml:"content"`
Langs []string `yaml:"langs"`
Frameworks []string `yaml:"frameworks"`
Licenses []string `yaml:"licenses"`
Info string `yaml:"info"`
Added string `yaml:"added"`
Updated string `yaml:"updated"`
Images []string `yaml:"images"`
Video *Video `yaml:"video"`
}
type Video struct {
YouTube string `yaml:"youtube"`
Vimeo int `yaml:"vimeo"`
ModDB int `yaml:"moddb"`
IndieDB int `yaml:"indiedb"`
}
// ============================================================================
// Schema
// ============================================================================
const schema = `
CREATE TABLE IF NOT EXISTS originals (
id INTEGER PRIMARY KEY,
name TEXT NOT NULL UNIQUE,
website TEXT,
wikipedia TEXT
);
CREATE TABLE IF NOT EXISTS original_alt_names (
original_id INTEGER NOT NULL REFERENCES originals(id),
name TEXT NOT NULL
);
CREATE TABLE IF NOT EXISTS original_platforms (
original_id INTEGER NOT NULL REFERENCES originals(id),
platform TEXT NOT NULL
);
CREATE TABLE IF NOT EXISTS original_genres (
original_id INTEGER NOT NULL REFERENCES originals(id),
genre TEXT NOT NULL
);
CREATE TABLE IF NOT EXISTS original_subgenres (
original_id INTEGER NOT NULL REFERENCES originals(id),
subgenre TEXT NOT NULL
);
CREATE TABLE IF NOT EXISTS original_themes (
original_id INTEGER NOT NULL REFERENCES originals(id),
theme TEXT NOT NULL
);
CREATE TABLE IF NOT EXISTS games (
id INTEGER PRIMARY KEY,
name TEXT NOT NULL,
type TEXT NOT NULL,
repo TEXT,
url TEXT,
feed TEXT,
development TEXT,
status TEXT NOT NULL,
content TEXT,
info TEXT,
added TEXT,
updated TEXT NOT NULL,
video_youtube TEXT,
video_vimeo INTEGER,
video_moddb INTEGER,
video_indiedb INTEGER
);
CREATE TABLE IF NOT EXISTS game_originals (
game_id INTEGER NOT NULL REFERENCES games(id),
original_id INTEGER NOT NULL REFERENCES originals(id)
);
CREATE TABLE IF NOT EXISTS game_langs (
game_id INTEGER NOT NULL REFERENCES games(id),
lang TEXT NOT NULL
);
CREATE TABLE IF NOT EXISTS game_frameworks (
game_id INTEGER NOT NULL REFERENCES games(id),
framework TEXT NOT NULL
);
CREATE TABLE IF NOT EXISTS game_licenses (
game_id INTEGER NOT NULL REFERENCES games(id),
license TEXT NOT NULL
);
CREATE TABLE IF NOT EXISTS game_multiplayer (
game_id INTEGER NOT NULL REFERENCES games(id),
multiplayer TEXT NOT NULL
);
CREATE TABLE IF NOT EXISTS game_images (
game_id INTEGER NOT NULL REFERENCES games(id),
url TEXT NOT NULL
);
-- Engines/VMs that run many unrelated original games.
-- A clone that is an engine is not itself a reimplementation of a specific game,
-- so its development/status metadata should not be taken as representative
-- of any individual original it supports.
CREATE TABLE IF NOT EXISTS engines (
game_id INTEGER NOT NULL REFERENCES games(id) UNIQUE,
note TEXT
);
-- Hero image fetched and stored locally per game.
CREATE TABLE IF NOT EXISTS game_hero_images (
game_id INTEGER PRIMARY KEY REFERENCES games(id),
mime_type TEXT NOT NULL,
source_url TEXT NOT NULL,
data BLOB NOT NULL,
fetched_at TEXT NOT NULL DEFAULT (datetime('now'))
);
-- View: one row per (clone, original) with all metadata denormalised.
-- The is_engine column flags rows where the clone is a broad engine;
-- filter WHERE NOT is_engine to get dedicated clones only.
CREATE VIEW IF NOT EXISTS games_full AS
SELECT
g.id AS game_id,
g.name AS game_name,
g.type,
g.repo,
g.url,
g.feed,
g.development,
g.status,
g.content,
g.info,
g.added,
g.updated,
o.id AS original_id,
o.name AS original_name,
o.wikipedia,
o.website,
(SELECT json_group_array(og.genre) FROM original_genres og WHERE og.original_id = o.id) AS genres,
(SELECT json_group_array(os.subgenre) FROM original_subgenres os WHERE os.original_id = o.id) AS subgenres,
(SELECT json_group_array(ot.theme) FROM original_themes ot WHERE ot.original_id = o.id) AS themes,
(SELECT json_group_array(op.platform) FROM original_platforms op WHERE op.original_id = o.id) AS platforms,
(SELECT json_group_array(l.lang) FROM game_langs l WHERE l.game_id = g.id) AS langs,
(SELECT json_group_array(f.framework) FROM game_frameworks f WHERE f.game_id = g.id) AS frameworks,
(SELECT json_group_array(li.license) FROM game_licenses li WHERE li.game_id = g.id) AS licenses,
(SELECT json_group_array(m.multiplayer) FROM game_multiplayer m WHERE m.game_id = g.id) AS multiplayer,
(SELECT json_group_array(i.url) FROM game_images i WHERE i.game_id = g.id) AS images,
g.video_youtube,
g.video_vimeo,
g.video_moddb,
g.video_indiedb,
EXISTS(SELECT 1 FROM engines e WHERE e.game_id = g.id) AS is_engine
FROM games g
JOIN game_originals go ON go.game_id = g.id
JOIN originals o ON o.id = go.original_id;
-- Denormalised (game_id, genre) pairs for fast querying without json_each.
-- Populated after import via a bulk INSERT from game_originals + original_genres.
CREATE TABLE IF NOT EXISTS game_genres (
game_id INTEGER NOT NULL REFERENCES games(id),
genre TEXT NOT NULL,
PRIMARY KEY (game_id, genre)
);
CREATE INDEX IF NOT EXISTS game_genres_genre ON game_genres(genre);
-- Manual genre overrides keyed by original game name.
-- When a clone's original matches, this genre is used instead of the
-- alphabetically-first genre from original_genres.
CREATE TABLE IF NOT EXISTS genre_overrides (
original_name TEXT NOT NULL PRIMARY KEY,
genre TEXT NOT NULL
);
`
// ============================================================================
// main / dispatch
// ============================================================================
func main() {
if len(os.Args) < 2 {
printUsage()
os.Exit(1)
}
switch os.Args[1] {
case "import":
if len(os.Args) != 4 {
fmt.Fprintf(os.Stderr, "Usage: %s import <osgameclones-dir> <output.db>\n", os.Args[0])
os.Exit(1)
}
cmdImport(os.Args[2], os.Args[3])
case "fetch-images":
if len(os.Args) != 3 {
fmt.Fprintf(os.Stderr, "Usage: %s fetch-images <db>\n", os.Args[0])
os.Exit(1)
}
cmdFetchImages(os.Args[2])
case "render-page":
if len(os.Args) != 4 {
fmt.Fprintf(os.Stderr, "Usage: %s render-page <db> <output.html>\n", os.Args[0])
os.Exit(1)
}
cmdRenderPage(os.Args[2], os.Args[3])
default:
printUsage()
os.Exit(1)
}
}
func printUsage() {
fmt.Fprintf(os.Stderr, `Usage: %s <subcommand> [args]
Subcommands:
import <osgameclones-dir> <output.db> Import YAML into a new SQLite db
fetch-images <db> Download hero images (idempotent)
render-page <db> <output.html> Render example HTML page
`, os.Args[0])
}
func openDB(path string) *sql.DB {
// Pragmas travel in the DSN so they apply to every pooled connection:
// busy_timeout (a writer waits for the lock instead of failing with
// SQLITE_BUSY), foreign-key enforcement (off by default in SQLite), and WAL so readers do not block the writer. A post-open
// db.Exec("PRAGMA …") would only configure whichever single pooled
// connection ran it, leaving the others at SQLite's defaults.
db, err := sql.Open("sqlite",
"file:"+path+"?_pragma=busy_timeout(5000)&_pragma=journal_mode(WAL)&_pragma=foreign_keys(on)")
if err != nil {
fmt.Fprintf(os.Stderr, "Error opening db: %v\n", err)
os.Exit(1)
}
return db
}
// ============================================================================
// import subcommand
// ============================================================================
func cmdImport(repoDir, dbPath string) {
if _, err := os.Stat(dbPath); err == nil {
fmt.Fprintf(os.Stderr, "Error: output file %q already exists\n", dbPath)
os.Exit(1)
}
db := openDB(dbPath)
defer db.Close()
if _, err := db.Exec(schema); err != nil {
fmt.Fprintf(os.Stderr, "Error creating schema: %v\n", err)
os.Exit(1)
}
originalIDs, err := importOriginals(db, filepath.Join(repoDir, "originals"))
if err != nil {
fmt.Fprintf(os.Stderr, "Error importing originals: %v\n", err)
os.Exit(1)
}
fmt.Printf("Imported %d originals\n", len(originalIDs))
total, err := importGames(db, filepath.Join(repoDir, "games"), originalIDs)
if err != nil {
fmt.Fprintf(os.Stderr, "Error importing games: %v\n", err)
os.Exit(1)
}
fmt.Printf("Done. Total clones imported: %d\n", total)
if err := seedEngines(db); err != nil {
fmt.Fprintf(os.Stderr, "Error seeding engines: %v\n", err)
os.Exit(1)
}
if err := seedGenreOverrides(db); err != nil {
fmt.Fprintf(os.Stderr, "Error seeding genre_overrides: %v\n", err)
os.Exit(1)
}
if err := buildGameGenres(db); err != nil {
fmt.Fprintf(os.Stderr, "Error building game_genres: %v\n", err)
os.Exit(1)
}
printStats(db)
}
var knownGenreOverrides = []struct{ originalName, genre string }{
{"Minecraft", "Sandbox"},
{"Minetest", "Sandbox"},
}
func seedGenreOverrides(db *sql.DB) error {
for _, o := range knownGenreOverrides {
if _, err := db.Exec(
`INSERT OR REPLACE INTO genre_overrides (original_name, genre) VALUES (?, ?)`,
o.originalName, o.genre,
); err != nil {
return fmt.Errorf("insert genre override %q: %w", o.originalName, err)
}
}
fmt.Printf(" genre_overrides seeded: %d\n", len(knownGenreOverrides))
return nil
}
func buildGameGenres(db *sql.DB) error {
res, err := db.Exec(`
INSERT OR IGNORE INTO game_genres (game_id, genre)
SELECT go.game_id, og.genre
FROM game_originals go
JOIN original_genres og ON og.original_id = go.original_id
`)
if err != nil {
return err
}
n, _ := res.RowsAffected()
fmt.Printf(" game_genres populated: %d rows\n", n)
return nil
}
var knownEngines = []struct{ name, note string }{
{"ScummVM", "Interpreter for hundreds of classic point-and-click adventures"},
{"xoreos", "Engine reimplementation for BioWare games"},
{"xkanon", "KiriKiri/NScripter visual novel engine"},
{"xclannad", "NScripter visual novel engine"},
{"Raze", "Build engine port (Duke Nukem 3D, Blood, Shadow Warrior, ...)"},
{"SR", "System Shock engine reimplementation"},
{"XL Engine", "Dark Forces / Outlaws / Blood engine"},
{"ReflectionHLE", "Keen Dreams / Catacomb 3-D engine"},
{"NBlood", "Blood engine port"},
{"lithtech", "LithTech engine reimplementation"},
{"NES Games Disassembly", "Collection of NES game disassemblies"},
{"Atari Jaguar Source Code Collection", "Collection of Jaguar source releases"},
{"Seed7", "Interpreter/compiler used for multiple game ports"},
{"Project ANISE", "RPG Maker engine reimplementation"},
{"SunHP games", "Collection of SunHP game ports"},
{"libmx2", "MX2 engine for multiple games"},
{"C-Dogs SDL", "C-Dogs engine supporting multiple campaigns"},
{"Rocks'n'Diamonds", "Boulderdash-family engine"},
{"Oric-Software", "Collection of Oric platform game ports"},
{"utkencode", "Unreal Tournament codec used across multiple games"},
}
func seedEngines(db *sql.DB) error {
for _, e := range knownEngines {
var id int64
err := db.QueryRow(`SELECT id FROM games WHERE name = ?`, e.name).Scan(&id)
if err == sql.ErrNoRows {
fmt.Printf(" Warning: engine %q not found in games table, skipping\n", e.name)
continue
}
if err != nil {
return fmt.Errorf("lookup engine %q: %w", e.name, err)
}
if _, err := db.Exec(`INSERT OR IGNORE INTO engines (game_id, note) VALUES (?, ?)`, id, e.note); err != nil {
return fmt.Errorf("insert engine %q: %w", e.name, err)
}
}
var engCount int
db.QueryRow(`SELECT COUNT(*) FROM engines`).Scan(&engCount)
fmt.Printf(" engines seeded: %d\n", engCount)
return nil
}
func importOriginals(db *sql.DB, dir string) (map[string]int64, error) {
entries, err := os.ReadDir(dir)
if err != nil {
return nil, err
}
originalIDs := map[string]int64{}
for _, entry := range entries {
if entry.IsDir() || !strings.HasSuffix(entry.Name(), ".yaml") {
continue
}
data, err := os.ReadFile(filepath.Join(dir, entry.Name()))
if err != nil {
return nil, err
}
var originals []Original
if err := yaml.Unmarshal(data, &originals); err != nil {
return nil, fmt.Errorf("parse %s: %w", entry.Name(), err)
}
tx, err := db.Begin()
if err != nil {
return nil, err
}
for _, orig := range originals {
id, err := insertOriginal(tx, &orig)
if err != nil {
_ = tx.Rollback()
return nil, fmt.Errorf("insert original %q: %w", orig.Name, err)
}
originalIDs[orig.Name] = id
for _, alt := range orig.AltNames {
originalIDs[alt] = id
}
}
if err := tx.Commit(); err != nil {
return nil, err
}
}
return originalIDs, nil
}
func insertOriginal(tx *sql.Tx, o *Original) (int64, error) {
res, err := tx.Exec(`INSERT INTO originals (name, website, wikipedia) VALUES (?, ?, ?)`,
o.Name, nullStr(o.External.Website), nullStr(o.External.Wikipedia))
if err != nil {
return 0, err
}
id, _ := res.LastInsertId()
for _, name := range o.AltNames {
tx.Exec(`INSERT INTO original_alt_names (original_id, name) VALUES (?, ?)`, id, name)
}
for _, p := range o.Platforms {
tx.Exec(`INSERT INTO original_platforms (original_id, platform) VALUES (?, ?)`, id, p)
}
for _, g := range o.Meta.Genres {
tx.Exec(`INSERT INTO original_genres (original_id, genre) VALUES (?, ?)`, id, g)
}
for _, s := range o.Meta.Subgenres {
tx.Exec(`INSERT INTO original_subgenres (original_id, subgenre) VALUES (?, ?)`, id, s)
}
for _, t := range o.Meta.Themes {
tx.Exec(`INSERT INTO original_themes (original_id, theme) VALUES (?, ?)`, id, t)
}
return id, nil
}
func importGames(db *sql.DB, dir string, originalIDs map[string]int64) (int, error) {
entries, err := os.ReadDir(dir)
if err != nil {
return 0, err
}
total := 0
missing := map[string]bool{}
for _, entry := range entries {
if entry.IsDir() || !strings.HasSuffix(entry.Name(), ".yaml") {
continue
}
data, err := os.ReadFile(filepath.Join(dir, entry.Name()))
if err != nil {
return 0, err
}
var games []Game
if err := yaml.Unmarshal(data, &games); err != nil {
return 0, fmt.Errorf("parse %s: %w", entry.Name(), err)
}
tx, err := db.Begin()
if err != nil {
return 0, err
}
for _, game := range games {
if err := insertGame(tx, &game, originalIDs, missing); err != nil {
_ = tx.Rollback()
return 0, fmt.Errorf("insert game %q: %w", game.Name, err)
}
total++
}
if err := tx.Commit(); err != nil {
return 0, err
}
fmt.Printf("Imported %s: %d clones\n", entry.Name(), len(games))
}
if len(missing) > 0 {
fmt.Fprintf(os.Stderr, "Warning: %d original name(s) in games/ not found in originals/\n", len(missing))
}
return total, nil
}
func insertGame(tx *sql.Tx, g *Game, originalIDs map[string]int64, missing map[string]bool) error {
var videoYouTube, videoVimeo, videoModDB, videoIndieDB any
if g.Video != nil {
videoYouTube = nullStr(g.Video.YouTube)
videoVimeo = nullInt(g.Video.Vimeo)
videoModDB = nullInt(g.Video.ModDB)
videoIndieDB = nullInt(g.Video.IndieDB)
}
res, err := tx.Exec(`
INSERT INTO games
(name, type, repo, url, feed, development, status, content, info, added, updated,
video_youtube, video_vimeo, video_moddb, video_indiedb)
VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`,
g.Name, g.Type, nullStr(g.Repo), nullStr(g.URL), nullStr(g.Feed),
nullStr(g.Development), g.Status, nullStr(g.Content), nullStr(g.Info),
nullStr(g.Added), g.Updated,
videoYouTube, videoVimeo, videoModDB, videoIndieDB,
)
if err != nil {
return fmt.Errorf("insert game: %w", err)
}
id, _ := res.LastInsertId()
for _, origName := range g.Originals {
origID, ok := originalIDs[origName]
if !ok {
missing[origName] = true
continue
}
tx.Exec(`INSERT INTO game_originals (game_id, original_id) VALUES (?, ?)`, id, origID)
}
for _, lang := range g.Langs {
tx.Exec(`INSERT INTO game_langs (game_id, lang) VALUES (?, ?)`, id, lang)
}
for _, fw := range g.Frameworks {
tx.Exec(`INSERT INTO game_frameworks (game_id, framework) VALUES (?, ?)`, id, fw)
}
for _, lic := range g.Licenses {
tx.Exec(`INSERT INTO game_licenses (game_id, license) VALUES (?, ?)`, id, lic)
}
for _, mp := range g.Multiplayer {
tx.Exec(`INSERT INTO game_multiplayer (game_id, multiplayer) VALUES (?, ?)`, id, mp)
}
for _, img := range g.Images {
tx.Exec(`INSERT INTO game_images (game_id, url) VALUES (?, ?)`, id, img)
}
return nil
}
func printStats(db *sql.DB) {
var origCount, gameCount int
db.QueryRow(`SELECT COUNT(*) FROM originals`).Scan(&origCount)
db.QueryRow(`SELECT COUNT(*) FROM games`).Scan(&gameCount)
fmt.Printf(" originals: %d\n clones/remakes: %d\n", origCount, gameCount)
rows, _ := db.Query(`
SELECT genre, COUNT(DISTINCT original_id) AS cnt
FROM original_genres GROUP BY genre ORDER BY cnt DESC LIMIT 10`)
defer rows.Close()
fmt.Println(" top genres (by original count):")
for rows.Next() {
var genre string
var cnt int
rows.Scan(&genre, &cnt)
fmt.Printf(" %-25s %d\n", genre, cnt)
}
}
func nullStr(s string) any {
if s == "" {
return nil
}
return s
}
func nullInt(n int) any {
if n == 0 {
return nil
}
return n
}
// ============================================================================
// fetch-images subcommand
// ============================================================================
const (
batchSize = 10
fetchTimeout = 15 * time.Second
maxImageBytes = 10 * 1024 * 1024
)
type candidate struct {
gameID int64
gameName string
domain string
imageURLs []string
}
const fetchOrderQuery = `
WITH recommendable AS (
SELECT game_id, game_name, images
FROM games_full
WHERE status = 'playable'
AND development IN ('complete', 'very active', 'active')
AND content = 'open'
AND NOT is_engine
AND images != '[]' AND images IS NOT NULL
GROUP BY game_id
),
with_domain AS (
SELECT
game_id, game_name, images,
SUBSTR(
json_extract(images, '$[0]'),
INSTR(json_extract(images, '$[0]'), '://') + 3,
INSTR(
SUBSTR(json_extract(images, '$[0]'), INSTR(json_extract(images, '$[0]'), '://') + 3),
'/'
) - 1
) AS domain
FROM recommendable
),
domain_ranks AS (
SELECT
game_id, game_name, images, domain,
DENSE_RANK() OVER (ORDER BY domain) - 1 AS domain_rank,
ROW_NUMBER() OVER (PARTITION BY domain ORDER BY game_name) - 1 AS rank_in_domain
FROM with_domain
),
num_domains AS (SELECT COUNT(DISTINCT domain) AS n FROM domain_ranks)
SELECT
game_id, game_name, domain, images,
rank_in_domain * (SELECT n FROM num_domains) + domain_rank AS fetch_order
FROM domain_ranks
WHERE game_id NOT IN (SELECT game_id FROM game_hero_images)
ORDER BY fetch_order
`
func cmdFetchImages(dbPath string) {
db := openDB(dbPath)
defer db.Close()
candidates, err := loadCandidates(db)
if err != nil {
fmt.Fprintf(os.Stderr, "Error loading candidates: %v\n", err)
os.Exit(1)
}
fmt.Printf("Games to fetch: %d\n", len(candidates))
client := &http.Client{Timeout: fetchTimeout}
success, failure := 0, 0
for i := 0; i < len(candidates); i += batchSize {
end := i + batchSize
if end > len(candidates) {
end = len(candidates)
}
batch := candidates[i:end]
type result struct {
c *candidate
mimeType string
sourceURL string
data []byte
err error
}
results := make([]result, len(batch))
var wg sync.WaitGroup
for j, c := range batch {
wg.Add(1)
go func(j int, c *candidate) {
defer wg.Done()
mime, srcURL, data, err := fetchImage(client, c.imageURLs)
results[j] = result{c: c, mimeType: mime, sourceURL: srcURL, data: data, err: err}
}(j, c)
}
wg.Wait()
for _, r := range results {
if r.err != nil {
fmt.Printf(" FAIL %-50s %v\n", r.c.gameName, r.err)
failure++
continue
}
if err := storeImage(db, r.c.gameID, r.mimeType, r.sourceURL, r.data); err != nil {
fmt.Printf(" FAIL %-50s store: %v\n", r.c.gameName, err)
failure++
continue
}
fmt.Printf(" OK %-50s %-30s %s (%d KB)\n",
r.c.gameName, r.c.domain, r.mimeType, len(r.data)/1024)
success++
}
fmt.Printf("--- batch %d-%d done (total ok=%d fail=%d) ---\n", i+1, end, success, failure)
}
fmt.Printf("\nDone. success=%d failure=%d\n", success, failure)
}
func loadCandidates(db *sql.DB) ([]*candidate, error) {
rows, err := db.Query(fetchOrderQuery)
if err != nil {
return nil, fmt.Errorf("query: %w", err)
}
defer rows.Close()
var candidates []*candidate
for rows.Next() {
var c candidate
var imagesJSON string
var fetchOrder int64
if err := rows.Scan(&c.gameID, &c.gameName, &c.domain, &imagesJSON, &fetchOrder); err != nil {
return nil, err
}
c.imageURLs = parseJSONStringArray(imagesJSON)
candidates = append(candidates, &c)
}
return candidates, rows.Err()
}
func parseJSONStringArray(s string) []string {
s = strings.TrimSpace(s)
if s == "[]" || s == "" {
return nil
}
s = s[1 : len(s)-1]
var result []string
for len(s) > 0 {
s = strings.TrimSpace(s)
if len(s) == 0 || s[0] != '"' {
break
}
i := 1
var sb strings.Builder
for i < len(s) {
if s[i] == '\\' && i+1 < len(s) {
sb.WriteByte(s[i+1])
i += 2
} else if s[i] == '"' {
i++
break
} else {
sb.WriteByte(s[i])
i++
}
}
result = append(result, sb.String())
s = strings.TrimSpace(s[i:])
if len(s) > 0 && s[0] == ',' {
s = s[1:]
}
}
return result
}
func fetchImage(client *http.Client, urls []string) (mimeType, sourceURL string, data []byte, err error) {
var lastErr error
for _, rawURL := range urls {
if _, e := url.ParseRequestURI(rawURL); e != nil {
continue
}
mime, body, e := fetchOne(client, rawURL)
if e != nil {
lastErr = fmt.Errorf("%s: %w", rawURL, e)
continue
}
return mime, rawURL, body, nil
}
if lastErr != nil {
return "", "", nil, lastErr
}
return "", "", nil, fmt.Errorf("no image URLs to try")
}
func fetchOne(client *http.Client, rawURL string) (mimeType string, data []byte, err error) {
req, err := http.NewRequest("GET", rawURL, nil)
if err != nil {
return "", nil, err
}
req.Header.Set("User-Agent", "osgameclones-fetch-images/1.0 (+https://codeberg.org/Profpatsch)")
resp, err := client.Do(req)
if err != nil {
return "", nil, err
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
return "", nil, fmt.Errorf("HTTP %d", resp.StatusCode)
}
ct := resp.Header.Get("Content-Type")
if i := strings.Index(ct, ";"); i >= 0 {
ct = strings.TrimSpace(ct[:i])
}
if !strings.HasPrefix(ct, "image/") {
lower := strings.ToLower(rawURL)
switch {
case strings.HasSuffix(lower, ".png"):
ct = "image/png"
case strings.HasSuffix(lower, ".jpg") || strings.HasSuffix(lower, ".jpeg"):
ct = "image/jpeg"
case strings.HasSuffix(lower, ".gif"):
ct = "image/gif"
case strings.HasSuffix(lower, ".webp"):
ct = "image/webp"
default:
return "", nil, fmt.Errorf("non-image content-type %q", ct)
}
}
body, err := io.ReadAll(io.LimitReader(resp.Body, maxImageBytes+1))
if err != nil {
return "", nil, fmt.Errorf("read body: %w", err)
}
if int64(len(body)) > maxImageBytes {
return "", nil, fmt.Errorf("image too large (>%d MB)", maxImageBytes/1024/1024)
}
return ct, body, nil
}
func storeImage(db *sql.DB, gameID int64, mimeType, sourceURL string, data []byte) error {
_, err := db.Exec(`
INSERT OR IGNORE INTO game_hero_images (game_id, mime_type, source_url, data, fetched_at)
VALUES (?, ?, ?, ?, datetime('now'))`,
gameID, mimeType, sourceURL, data)
return err
}
// ============================================================================
// render-page subcommand
// ============================================================================
type pageGame struct {
Name string
Repo string
ImgURL string
}
func cmdRenderPage(dbPath, outPath string) {
db := openDB(dbPath)
defer db.Close()
// Query: for each genre, up to 10 recommendable games that have a hero image,
// ordered by development activity then name.
rows, err := db.Query(`
SELECT
json_each.value AS genre,
g.game_name,
g.repo,
h.source_url
FROM games_full g
JOIN game_hero_images h ON h.game_id = g.game_id
JOIN json_each(g.genres)
WHERE g.status = 'playable'
AND g.development IN ('complete', 'very active', 'active')
AND g.content = 'open'
AND NOT g.is_engine
GROUP BY json_each.value, g.game_id
ORDER BY
json_each.value,
CASE g.development WHEN 'very active' THEN 0 WHEN 'active' THEN 1 ELSE 2 END,
g.game_name
`)
if err != nil {
fmt.Fprintf(os.Stderr, "Error querying: %v\n", err)
os.Exit(1)
}
defer rows.Close()
// Group into map[genre][]pageGame, capped at 10 per genre
byGenre := map[string][]pageGame{}
genreOrder := []string{}
for rows.Next() {
var genre, name, imgURL string
var repo sql.NullString
if err := rows.Scan(&genre, &name, &repo, &imgURL); err != nil {
fmt.Fprintf(os.Stderr, "Error scanning: %v\n", err)
os.Exit(1)
}
if _, seen := byGenre[genre]; !seen {
genreOrder = append(genreOrder, genre)
}
if len(byGenre[genre]) < 10 {
byGenre[genre] = append(byGenre[genre], pageGame{
Name: name, Repo: repo.String, ImgURL: imgURL,
})
}
}
f, err := os.Create(outPath)
if err != nil {
fmt.Fprintf(os.Stderr, "Error creating output: %v\n", err)
os.Exit(1)
}
defer f.Close()
fmt.Fprint(f, `<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Open Source Games — What to play today?</title>
<style>
body { font-family: system-ui, sans-serif; background: #111; color: #eee; margin: 0; padding: 2rem; }
h1 { color: #fff; margin-bottom: 2rem; }
h2 { color: #adf; border-bottom: 1px solid #333; padding-bottom: .4rem; margin-top: 2.5rem; }
.grid {
display: grid;
grid-template-columns: repeat(2, 1fr);
gap: 1rem;
max-width: 900px;
}
.card {
background: #1e1e1e;
border-radius: 6px;
overflow: hidden;
display: flex;
flex-direction: column;
}
.card a { text-decoration: none; color: inherit; display: block; position: relative; }
.card img {
width: 100%;
height: 150px;
object-fit: cover;
object-position: top;
display: block;
background: #2a2a2a;
}
.card-name {
position: absolute;
top: 0;
right: 0;
max-width: 400px;
padding: .25rem .5rem;
font-size: .8rem;
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
color: #fff;
background: rgba(0,0,0,.55);
backdrop-filter: blur(2px);
border-bottom-left-radius: 4px;
}
</style>
</head>
<body>
<h1>Open Source Games — What to play today?</h1>
`)
for _, genre := range genreOrder {
games := byGenre[genre]
fmt.Fprintf(f, "<h2>%s</h2>\n<div class=\"grid\">\n", htmlEscape(genre))
for _, g := range games {
link := g.Repo
if link == "" {
link = "#"
}
fmt.Fprintf(f,
" <div class=\"card\"><a href=\"%s\" target=\"_blank\" rel=\"noopener\">"+
"<img src=\"%s\" alt=\"%s\" loading=\"lazy\">"+
"<div class=\"card-name\">%s</div>"+
"</a></div>\n",
htmlEscape(link), htmlEscape(g.ImgURL),
htmlEscape(g.Name), htmlEscape(g.Name),
)
}
fmt.Fprint(f, "</div>\n")
}
fmt.Fprint(f, "</body>\n</html>\n")
fmt.Printf("Written: %s\n", outPath)
}
func htmlEscape(s string) string {
s = strings.ReplaceAll(s, "&", "&")
s = strings.ReplaceAll(s, "<", "<")
s = strings.ReplaceAll(s, ">", ">")
s = strings.ReplaceAll(s, "\"", """)
return s
}
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