package main

import (
	"fmt"
	"log"
	"net/http"
	"os"
	"path/filepath"

	"arimelody.me/arimelody.me/api/v1/admin"
	"arimelody.me/arimelody.me/api/v1/music"
	"arimelody.me/arimelody.me/db"
	"arimelody.me/arimelody.me/global"
)

const DEFAULT_PORT int = 8080

func main() {
    db := db.InitDatabase()
    defer db.Close()
    
    var err error
    music.Artists, err = music.PullAllArtists(db)
    if err != nil {
        fmt.Printf("Failed to pull artists from database: %v\n", err);
        panic(1)
    }
    fmt.Printf("%d artists loaded successfully.\n", len(music.Artists))

    music.Releases, err = music.PullAllReleases(db)
    if err != nil {
        fmt.Printf("Failed to pull releases from database: %v\n", err);
        panic(1)
    }
    fmt.Printf("%d releases loaded successfully.\n", len(music.Releases))

    mux := createServeMux()

    port := DEFAULT_PORT
    fmt.Printf("now serving at http://127.0.0.1:%d\n", port)
    log.Fatal(http.ListenAndServe(fmt.Sprintf(":%d", port), mux))
}

func createServeMux() *http.ServeMux {
    mux := http.NewServeMux()
    
    mux.Handle("/api/v1/admin/", global.HTTPLog(http.StripPrefix("/api/v1/admin", admin.Handler())))

    mux.Handle("/api/v1/music/artist/", global.HTTPLog(http.StripPrefix("/api/v1/music/artist", music.ServeArtist())))
    mux.Handle("/api/v1/music/", global.HTTPLog(http.StripPrefix("/api/v1/music", music.ServeRelease())))
    mux.Handle("/api/v1/music", global.HTTPLog(music.PostRelease()))

    mux.Handle("/music-artwork/", global.HTTPLog(http.StripPrefix("/music-artwork", music.ServeArtwork())))
    mux.Handle("/music/", global.HTTPLog(http.StripPrefix("/music", music.ServeGateway())))
    mux.Handle("/music", global.HTTPLog(music.ServeCatalog()))

    mux.Handle("/", global.HTTPLog(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
        if r.URL.Path == "/" || r.URL.Path == "/index.html" {
            global.ServeTemplate("index.html", nil).ServeHTTP(w, r)
            return
        }
        staticHandler("public").ServeHTTP(w, r)
    })))
    
    return mux
}

func staticHandler(directory string) http.Handler {
    return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
        info, err := os.Stat(filepath.Join(directory, filepath.Clean(r.URL.Path)))
        // does the file exist?
        if err != nil {
            if os.IsNotExist(err) {
                http.NotFound(w, r)
                return
            }
        }

        // is thjs a directory? (forbidden)
        if info.IsDir() {
            http.NotFound(w, r)
            return
        }

        http.FileServer(http.Dir("./public")).ServeHTTP(w, r)
    })
}