the start of the go backend

2026-04-19 15:30:05 +00:00 · 2025-02-02 03:54:03 +01:00
parent bc353a90e7
commit ee7cf10b28
7 changed files with 638 additions and 0 deletions
--- a/go-backend/.gitignore
+++ b/go-backend/.gitignore
@@ -0,0 +1,2 @@
+data/*
+.vscode/
--- a/go-backend/database.go
+++ b/go-backend/database.go
@@ -0,0 +1,316 @@
+package main
+
+import (
+	"database/sql"
+	"errors"
+	"fmt"
+	"log"
+	"os"
+	"path/filepath"
+
+	"github.com/juli0n21/go-osu-parser/parser"
+	_ "modernc.org/sqlite"
+)
+
+var ErrBeatmapCountNotMatch = errors.New("beatmap count not matching")
+
+func initDB(connectionString string, osuDb *parser.OsuDB) (*sql.DB, error) {
+
+	dir := filepath.Dir(connectionString)
+
+	if _, err := os.Stat(dir); os.IsNotExist(err) {
+		err = os.MkdirAll(dir, 0755)
+		if err != nil {
+			return nil, fmt.Errorf("failed to create directory %s: %v", dir, err)
+		}
+	}
+
+	db, err := sql.Open("sqlite", connectionString)
+	if err != nil {
+		return nil, fmt.Errorf("failed to open SQLite database %s: %v", connectionString, err)
+	}
+
+	if err = createDB(db); err != nil {
+		return nil, err
+	}
+
+	if err = checkhealth(db, osuDb); err != nil {
+		if err = rebuildDb(db, osuDb); err != nil {
+			return nil, err
+		}
+	}
+
+	return db, nil
+}
+
+func createDB(db *sql.DB) error {
+	_, err := db.Query(`
+	CREATE TABLE IF NOT EXISTS Beatmap (
+    BeatmapId INTEGER DEFAULT 0,
+    Artist TEXT DEFAULT '?????',
+    ArtistUnicode TEXT DEFAULT '?????',
+    Title TEXT DEFAULT '???????',
+    TitleUnicode TEXT DEFAULT '???????',
+    Creator TEXT DEFAULT '?????',
+    Difficulty TEXT DEFAULT '1',
+    AudioFileName TEXT DEFAULT 'unknown.mp3',
+    MD5Hash TEXT DEFAULT '00000000000000000000000000000000',
+    FileName TEXT DEFAULT 'unknown.osu',
+    RankedStatus TEXT DEFAULT Unknown,
+    LastModifiedTime DATETIME DEFAULT '0001-01-01 00:00:00',
+    TotalTime INTEGER DEFAULT 0,
+    AudioPreviewTime INTEGER DEFAULT 0,
+    BeatmapSetId INTEGER DEFAULT -1,
+    Source TEXT DEFAULT '',
+    Tags TEXT DEFAULT '',
+    LastPlayed DATETIME DEFAULT '0001-01-01 00:00:00',
+    FolderName TEXT DEFAULT 'Unknown Folder',
+    UNIQUE (Artist, Title, MD5Hash, Difficulty)
+	);
+	`)
+
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func checkhealth(db *sql.DB, osuDb *parser.OsuDB) error {
+
+	rows, err := db.Query(`SELECT COUNT(*) FROM Beatmap GROUP BY BeatmapSetId;`)
+	if err != nil {
+		return err
+	}
+	defer rows.Close()
+
+	var count int
+	if err = rows.Scan(&count); err != nil {
+		return err
+	}
+
+	if count != int(osuDb.FolderCount) {
+		log.Println("Folder count missmatch rebuilding db...")
+		return ErrBeatmapCountNotMatch
+	}
+
+	rows, err = db.Query(`SELECT COUNT(*) FROM Beatmap;`)
+	if err != nil {
+		return err
+	}
+
+	if err = rows.Scan(&count); err != nil {
+		return err
+	}
+
+	if count != int(osuDb.NumberOfBeatmaps) {
+		log.Println("Beatmap count missmatch rebuilding db...")
+		return ErrBeatmapCountNotMatch
+	}
+
+	return nil
+}
+
+func rebuildDb(db *sql.DB, osuDb *parser.OsuDB) error {
+
+	if _, err := db.Query("DROP TABLE Beatmap"); err != nil {
+		return err
+	}
+
+	if err := createDB(db); err != nil {
+		return err
+	}
+	stmt, err := db.Prepare(`
+		INSERT INTO Beatmap (
+			BeatmapId, Artist, ArtistUnicode, Title, TitleUnicode, Creator, 
+			Difficulty, AudioFileName, MD5Hash, FileName, RankedStatus, 
+			LastModifiedTime, TotalTime, AudioPreviewTime, BeatmapSetId, 
+			Source, Tags, LastPlayed, FolderName
+		) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)
+	`)
+	//	ON CONFLICT (Artist, Title, MD5Hash) DO NOTHING
+
+	if err != nil {
+		return err
+	}
+	defer stmt.Close()
+
+	tx, err := db.Begin()
+	if err != nil {
+		return err
+	}
+
+	stmt = tx.Stmt(stmt)
+
+	for i, beatmap := range osuDb.Beatmaps {
+		//fmt.Println(i, beatmap.Artist, beatmap.SongTitle, beatmap.MD5Hash)
+		_, err := stmt.Exec(
+			beatmap.DifficultyID, beatmap.Artist, beatmap.ArtistUnicode,
+			beatmap.SongTitle, beatmap.SongTitleUnicode, beatmap.Creator,
+			beatmap.Difficulty, beatmap.AudioFileName, beatmap.MD5Hash,
+			beatmap.FileName, beatmap.RankedStatus, beatmap.LastModificationTime,
+			beatmap.TotalTime, beatmap.AudioPreviewStartTime, beatmap.BeatmapID,
+			beatmap.SongSource, beatmap.SongTags, beatmap.LastPlayed, beatmap.FolderName,
+		)
+		if err != nil {
+			fmt.Println(i, "hash: ", beatmap.MD5Hash, "artist:", beatmap.Artist, "title:", beatmap.SongTitle, err)
+		}
+	}
+
+	if err := tx.Commit(); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func getBeatmapCount(db *sql.DB) int {
+	rows, err := db.Query("SELECT COUNT(*) FROM Beatmap")
+	if err != nil {
+		log.Println(err)
+		return 0
+	}
+	defer rows.Close()
+
+	var count int
+	if rows.Next() {
+		err = rows.Scan(&count)
+		if err != nil {
+			log.Println(err)
+			return 0
+		}
+	} else {
+		return 0
+	}
+
+	return count
+}
+
+func getRecent(db *sql.DB, limit, offset int) ([]Song, error) {
+	rows, err := db.Query("SELECT * FROM Songs ORDER BY LastPlayed DESC LIMIT ? OFFSET ?", limit, offset)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	return scanSongs(rows)
+}
+
+func getSearch(db *sql.DB, q string, limit, offset int) (ActiveSearch, error) {
+	rows, err := db.Query("SELECT * FROM Songs WHERE Title LIKE ? OR Artist LIKE ? LIMIT ? OFFSET ?", "%"+q+"%", "%"+q+"%", limit, offset)
+	if err != nil {
+		return ActiveSearch{}, err
+	}
+	defer rows.Close()
+	_, err = scanSongs(rows)
+	if err != nil {
+		return ActiveSearch{}, err
+	}
+	return ActiveSearch{}, nil
+}
+
+func getArtists(db *sql.DB, q string, limit, offset int) ([]string, error) {
+	rows, err := db.Query("SELECT * FROM Songs WHERE Title LIKE ? OR Artist LIKE ? LIMIT ? OFFSET ?", "%"+q+"%", "%"+q+"%", limit, offset)
+	if err != nil {
+		return []string{}, err
+	}
+	defer rows.Close()
+	_, err = scanSongs(rows)
+	if err != nil {
+		return []string{}, err
+	}
+	return []string{}, nil
+}
+
+func getFavorites(db *sql.DB, q string, limit, offset int) ([]Song, error) {
+	rows, err := db.Query("SELECT * FROM Songs WHERE IsFavorite = 1 LIMIT ? OFFSET ?", limit, offset)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	return scanSongs(rows)
+}
+
+func getCollection(db *sql.DB, index int) (Collection, error) {
+	row := db.QueryRow("SELECT * FROM Collections WHERE CollectionId = ?", index)
+	return scanCollection(row)
+}
+
+func getCollections(db *sql.DB, q string, limit, offset int) ([]Collection, error) {
+	//not correct
+	rows, err := db.Query("SELECT * FROM Collections WHERE name = ? LIMIT ? OFFSET ?", q, limit, offset)
+	if err != nil {
+		return []Collection{}, err
+	}
+	return scanCollections(rows)
+}
+
+func getSong(db *sql.DB, hash string) (Song, error) {
+	row := db.QueryRow("SELECT * FROM Songs WHERE MD5Hash = ?", hash)
+	return scanSong(row)
+}
+
+func scanSongs(rows *sql.Rows) ([]Song, error) {
+
+	var songs []Song
+	for rows.Next() {
+		var s Song
+		if err := rows.Scan(&s); err != nil {
+			return []Song{}, err
+		}
+		songs = append(songs, s)
+	}
+	return songs, nil
+}
+
+func scanSong(row *sql.Row) (Song, error) {
+
+	var s Song
+	if err := row.Scan(&s); err != nil {
+		return Song{}, err
+	}
+	return s, nil
+}
+
+func scanCollections(rows *sql.Rows) ([]Collection, error) {
+
+	var collection []Collection
+	for rows.Next() {
+		var c Collection
+		if err := rows.Scan(&c); err != nil {
+			return []Collection{}, err
+		}
+		collection = append(collection, c)
+	}
+	return collection, nil
+}
+
+func scanCollection(row *sql.Row) (Collection, error) {
+
+	var c Collection
+	if err := row.Scan(&c); err != nil {
+		return Collection{}, err
+	}
+	return c, nil
+}
+
+func scanCollectionPreviews(rows *sql.Rows) ([]CollectionPreview, error) {
+
+	var collection []CollectionPreview
+	for rows.Next() {
+		var c CollectionPreview
+		if err := rows.Scan(&c); err != nil {
+			return []CollectionPreview{}, err
+		}
+		collection = append(collection, c)
+	}
+	return collection, nil
+}
+
+func scanCollectionPreview(row *sql.Row) (CollectionPreview, error) {
+
+	var c CollectionPreview
+	if err := row.Scan(&c); err != nil {
+		return CollectionPreview{}, err
+	}
+	return c, nil
+}
--- a/go-backend/go.mod
+++ b/go-backend/go.mod
@@ -0,0 +1,21 @@
+module backend
+
+go 1.23.5
+
+require (
+	github.com/joho/godotenv v1.5.1
+	github.com/juli0n21/go-osu-parser v0.0.6
+	modernc.org/sqlite v1.34.5
+)
+
+require (
+	github.com/dustin/go-humanize v1.0.1 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/ncruces/go-strftime v0.1.9 // indirect
+	github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec // indirect
+	golang.org/x/sys v0.22.0 // indirect
+	modernc.org/libc v1.55.3 // indirect
+	modernc.org/mathutil v1.6.0 // indirect
+	modernc.org/memory v1.8.0 // indirect
+)
--- a/go-backend/go.sum
+++ b/go-backend/go.sum
@@ -0,0 +1,47 @@
+github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkpeCY=
+github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
+github.com/google/pprof v0.0.0-20240409012703-83162a5b38cd h1:gbpYu9NMq8jhDVbvlGkMFWCjLFlqqEZjEmObmhUy6Vo=
+github.com/google/pprof v0.0.0-20240409012703-83162a5b38cd/go.mod h1:kf6iHlnVGwgKolg33glAes7Yg/8iWP8ukqeldJSO7jw=
+github.com/google/uuid v1.6.0 h1:NIvaJDMOsjHA8n1jAhLSgzrAzy1Hgr+hNrb57e+94F0=
+github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
+github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
+github.com/juli0n21/go-osu-parser v0.0.6 h1:r5BTNrEDUHsF0ZFCvx0vfRcjU2IRvT3va4O1r3dm7og=
+github.com/juli0n21/go-osu-parser v0.0.6/go.mod h1:oLLWnZReOMW4i5aNva/zvXsFqzdQigrbjyxOSs0cx+0=
+github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
+github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+github.com/ncruces/go-strftime v0.1.9 h1:bY0MQC28UADQmHmaF5dgpLmImcShSi2kHU9XLdhx/f4=
+github.com/ncruces/go-strftime v0.1.9/go.mod h1:Fwc5htZGVVkseilnfgOVb9mKy6w1naJmn9CehxcKcls=
+github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec h1:W09IVJc94icq4NjY3clb7Lk8O1qJ8BdBEF8z0ibU0rE=
+github.com/remyoudompheng/bigfft v0.0.0-20230129092748-24d4a6f8daec/go.mod h1:qqbHyh8v60DhA7CoWK5oRCqLrMHRGoxYCSS9EjAz6Eo=
+golang.org/x/mod v0.16.0 h1:QX4fJ0Rr5cPQCF7O9lh9Se4pmwfwskqZfq5moyldzic=
+golang.org/x/mod v0.16.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.22.0 h1:RI27ohtqKCnwULzJLqkv897zojh5/DwS/ENaMzUOaWI=
+golang.org/x/sys v0.22.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/tools v0.19.0 h1:tfGCXNR1OsFG+sVdLAitlpjAvD/I6dHDKnYrpEZUHkw=
+golang.org/x/tools v0.19.0/go.mod h1:qoJWxmGSIBmAeriMx19ogtrEPrGtDbPK634QFIcLAhc=
+modernc.org/cc/v4 v4.21.4 h1:3Be/Rdo1fpr8GrQ7IVw9OHtplU4gWbb+wNgeoBMmGLQ=
+modernc.org/cc/v4 v4.21.4/go.mod h1:HM7VJTZbUCR3rV8EYBi9wxnJ0ZBRiGE5OeGXNA0IsLQ=
+modernc.org/ccgo/v4 v4.19.2 h1:lwQZgvboKD0jBwdaeVCTouxhxAyN6iawF3STraAal8Y=
+modernc.org/ccgo/v4 v4.19.2/go.mod h1:ysS3mxiMV38XGRTTcgo0DQTeTmAO4oCmJl1nX9VFI3s=
+modernc.org/fileutil v1.3.0 h1:gQ5SIzK3H9kdfai/5x41oQiKValumqNTDXMvKo62HvE=
+modernc.org/fileutil v1.3.0/go.mod h1:XatxS8fZi3pS8/hKG2GH/ArUogfxjpEKs3Ku3aK4JyQ=
+modernc.org/gc/v2 v2.4.1 h1:9cNzOqPyMJBvrUipmynX0ZohMhcxPtMccYgGOJdOiBw=
+modernc.org/gc/v2 v2.4.1/go.mod h1:wzN5dK1AzVGoH6XOzc3YZ+ey/jPgYHLuVckd62P0GYU=
+modernc.org/libc v1.55.3 h1:AzcW1mhlPNrRtjS5sS+eW2ISCgSOLLNyFzRh/V3Qj/U=
+modernc.org/libc v1.55.3/go.mod h1:qFXepLhz+JjFThQ4kzwzOjA/y/artDeg+pcYnY+Q83w=
+modernc.org/mathutil v1.6.0 h1:fRe9+AmYlaej+64JsEEhoWuAYBkOtQiMEU7n/XgfYi4=
+modernc.org/mathutil v1.6.0/go.mod h1:Ui5Q9q1TR2gFm0AQRqQUaBWFLAhQpCwNcuhBOSedWPo=
+modernc.org/memory v1.8.0 h1:IqGTL6eFMaDZZhEWwcREgeMXYwmW83LYW8cROZYkg+E=
+modernc.org/memory v1.8.0/go.mod h1:XPZ936zp5OMKGWPqbD3JShgd/ZoQ7899TUuQqxY+peU=
+modernc.org/opt v0.1.3 h1:3XOZf2yznlhC+ibLltsDGzABUGVx8J6pnFMS3E4dcq4=
+modernc.org/opt v0.1.3/go.mod h1:WdSiB5evDcignE70guQKxYUl14mgWtbClRi5wmkkTX0=
+modernc.org/sortutil v1.2.0 h1:jQiD3PfS2REGJNzNCMMaLSp/wdMNieTbKX920Cqdgqc=
+modernc.org/sortutil v1.2.0/go.mod h1:TKU2s7kJMf1AE84OoiGppNHJwvB753OYfNl2WRb++Ss=
+modernc.org/sqlite v1.34.5 h1:Bb6SR13/fjp15jt70CL4f18JIN7p7dnMExd+UFnF15g=
+modernc.org/sqlite v1.34.5/go.mod h1:YLuNmX9NKs8wRNK2ko1LW1NGYcc9FkBO69JOt1AR9JE=
+modernc.org/strutil v1.2.0 h1:agBi9dp1I+eOnxXeiZawM8F4LawKv4NzGWSaLfyeNZA=
+modernc.org/strutil v1.2.0/go.mod h1:/mdcBmfOibveCTBxUl5B5l6W+TTH1FXPLHZE6bTosX0=
+modernc.org/token v1.1.0 h1:Xl7Ap9dKaEs5kLoOQeQmPWevfnk/DM5qcLcYlA8ys6Y=
+modernc.org/token v1.1.0/go.mod h1:UGzOrNV1mAFSEB63lOFHIpNRUVMvYTc6yu1SMY/XTDM=
--- a/go-backend/handlers.go
+++ b/go-backend/handlers.go
@@ -0,0 +1,187 @@
+package main
+
+import (
+	"database/sql"
+	"errors"
+	"fmt"
+	"net/http"
+	"strconv"
+
+	"github.com/juli0n21/go-osu-parser/parser"
+)
+
+func run(db *sql.DB, osuDb *parser.OsuDB) {
+
+	http.HandleFunc("/ping", func(w http.ResponseWriter, r *http.Request) {
+		fmt.Fprintln(w, "pong")
+	})
+
+	http.HandleFunc("/login", func(w http.ResponseWriter, r *http.Request) {
+		fmt.Fprintln(w, "Login endpoint")
+	})
+
+	http.HandleFunc("/api/v1/songs/", func(w http.ResponseWriter, r *http.Request) {
+		limit, err := strconv.Atoi(r.URL.Query().Get("limit"))
+		if err != nil {
+			fmt.Fprintln(w, err)
+		}
+		offset, err := strconv.Atoi(r.URL.Query().Get("offset"))
+		if err != nil {
+			fmt.Fprintln(w, err)
+		}
+
+		recent, err := getRecent(db, limit, offset)
+		if err != nil {
+			fmt.Fprintln(w, err)
+		}
+		fmt.Fprintln(w, recent)
+	})
+
+	http.HandleFunc("/api/v1/songs/recent", func(w http.ResponseWriter, r *http.Request) {
+		limit, err := strconv.Atoi(r.URL.Query().Get("limit"))
+		if err != nil {
+			fmt.Fprintln(w, err)
+		}
+		offset, err := strconv.Atoi(r.URL.Query().Get("offset"))
+		if err != nil {
+			fmt.Fprintln(w, err)
+		}
+
+		recent, err := getRecent(db, limit, offset)
+		if err != nil {
+			fmt.Fprintln(w, err)
+		}
+		fmt.Fprintln(w, recent)
+		fmt.Fprintln(w, "Recent songs endpoint")
+	})
+
+	http.HandleFunc("/api/v1/songs/favorite", func(w http.ResponseWriter, r *http.Request) {
+		limit, err := strconv.Atoi(r.URL.Query().Get("limit"))
+		if err != nil {
+			fmt.Fprintln(w, err)
+		}
+		offset, err := strconv.Atoi(r.URL.Query().Get("offset"))
+		if err != nil {
+			fmt.Fprintln(w, err)
+		}
+
+		recent, err := getRecent(db, limit, offset)
+		if err != nil {
+			fmt.Fprintln(w, err)
+		}
+		fmt.Fprintln(w, recent)
+		fmt.Fprintln(w, "Favorite songs endpoint")
+	})
+
+	http.HandleFunc("/api/v1/collections/{index}", func(w http.ResponseWriter, r *http.Request) {
+		limit, err := strconv.Atoi(r.URL.Query().Get("limit"))
+		if err != nil {
+			fmt.Fprintln(w, err)
+		}
+		offset, err := strconv.Atoi(r.URL.Query().Get("offset"))
+		if err != nil {
+			fmt.Fprintln(w, err)
+		}
+
+		recent, err := getRecent(db, limit, offset)
+		if err != nil {
+			fmt.Fprintln(w, err)
+		}
+		fmt.Fprintln(w, recent)
+		fmt.Fprintln(w, "Collections endpoint")
+	})
+
+	http.HandleFunc("/api/v1/collections/", func(w http.ResponseWriter, r *http.Request) {
+		limit, err := strconv.Atoi(r.URL.Query().Get("limit"))
+		if err != nil {
+			fmt.Fprintln(w, err)
+		}
+		offset, err := strconv.Atoi(r.URL.Query().Get("offset"))
+		if err != nil {
+			fmt.Fprintln(w, err)
+		}
+
+		recent, err := getRecent(db, limit, offset)
+		if err != nil {
+			fmt.Fprintln(w, err)
+		}
+		fmt.Fprintln(w, recent)
+		fmt.Fprintln(w, "Collection with index endpoint")
+	})
+
+	http.HandleFunc("/api/v1/audio/{hash}", func(w http.ResponseWriter, r *http.Request) {
+		fmt.Fprintln(w, "Audio endpoint")
+	})
+
+	http.HandleFunc("/api/v1/search/active", func(w http.ResponseWriter, r *http.Request) {
+		limit, err := strconv.Atoi(r.URL.Query().Get("limit"))
+		if err != nil {
+			fmt.Fprintln(w, err)
+		}
+		offset, err := strconv.Atoi(r.URL.Query().Get("offset"))
+		if err != nil {
+			fmt.Fprintln(w, err)
+		}
+		q := r.URL.Query().Get("query")
+		if err != nil || q == "" {
+			fmt.Fprintln(w, errors.New("'query' is required for search"))
+		}
+
+		recent, err := getSearch(db, q, limit, offset)
+		if err != nil {
+			fmt.Fprintln(w, err)
+		}
+		fmt.Fprintln(w, recent)
+		fmt.Fprintln(w, "Active search endpoint")
+	})
+
+	http.HandleFunc("/api/v1/search/artist", func(w http.ResponseWriter, r *http.Request) {
+		limit, err := strconv.Atoi(r.URL.Query().Get("limit"))
+		if err != nil {
+			fmt.Fprintln(w, err)
+		}
+		offset, err := strconv.Atoi(r.URL.Query().Get("offset"))
+		if err != nil {
+			fmt.Fprintln(w, err)
+		}
+		q := r.URL.Query().Get("query")
+		if err != nil {
+			fmt.Fprintln(w, err)
+		}
+
+		recent, err := getArtists(db, q, limit, offset)
+		if err != nil {
+			fmt.Fprintln(w, err)
+		}
+		fmt.Fprintln(w, recent)
+		fmt.Fprintln(w, "Artist search endpoint")
+	})
+
+	http.HandleFunc("/api/v1/search/collections", func(w http.ResponseWriter, r *http.Request) {
+		limit, err := strconv.Atoi(r.URL.Query().Get("limit"))
+		if err != nil {
+			fmt.Fprintln(w, err)
+		}
+		offset, err := strconv.Atoi(r.URL.Query().Get("offset"))
+		if err != nil {
+			fmt.Fprintln(w, err)
+		}
+		q := r.URL.Query().Get("query")
+		if err != nil {
+			fmt.Fprintln(w, err)
+		}
+
+		recent, err := getCollections(db, q, limit, offset)
+		if err != nil {
+			fmt.Fprintln(w, err)
+		}
+		fmt.Fprintln(w, recent)
+	})
+
+	http.HandleFunc("/api/v1/images/{filename}", func(w http.ResponseWriter, r *http.Request) {
+		fmt.Fprintln(w, "Images endpoint")
+	})
+
+	fmt.Println("starting server on http://localhost:8080")
+	http.ListenAndServe(":8080", nil)
+}
--- a/go-backend/main.go
+++ b/go-backend/main.go
@@ -0,0 +1,30 @@
+package main
+
+import (
+	"fmt"
+	"log"
+
+	"github.com/joho/godotenv"
+	"github.com/juli0n21/go-osu-parser/parser"
+)
+
+func main() {
+
+	filename := "/mnt/g/Anwendungen/osu!/osu!.db"
+
+	if err := godotenv.Load(); err != nil {
+		fmt.Println("Error loading .env file")
+	}
+
+	osuDb, err := parser.ParseOsuDB(filename)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	db, err := initDB("./data/music.db", osuDb)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	run(db, osuDb)
+}
--- a/go-backend/models.go
+++ b/go-backend/models.go
@@ -0,0 +1,35 @@
+package main
+
+import "time"
+
+type Song struct {
+	MD5Hash   string
+	Title     string
+	Artist    string
+	Creator   string
+	Folder    string
+	File      string
+	Audio     string
+	Mapper    string
+	TotalTime time.Duration
+	Url       string
+	Image     string
+}
+
+type CollectionPreview struct {
+	name  string
+	image string
+	index int
+	items int
+}
+
+type Collection struct {
+	name  string
+	items int
+	Songs []Song
+}
+
+type ActiveSearch struct {
+	artist string
+	Songs  []Song
+}