package api

import (
	"encoding/json"
	"fmt"
	"net/http"

	"arimelody.me/arimelody.me/global"
	"arimelody.me/arimelody.me/music/model"
	controller "arimelody.me/arimelody.me/music/controller"
)

func CreateMusicCredit() http.Handler {
    return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
        if r.Method != http.MethodPost {
            http.NotFound(w, r)
            return
        }

        type creditJSON struct {
            Release string
            Artist  string
            Role    string
            Primary bool
        }

        var data creditJSON
        err := json.NewDecoder(r.Body).Decode(&data)
        if err != nil {
            http.Error(w, http.StatusText(http.StatusBadRequest), http.StatusBadRequest)
            return
        }

        var release = global.GetRelease(data.Release)
        if release == nil {
            http.Error(w, fmt.Sprintf("Release %s does not exist\n", data.Release), http.StatusBadRequest)
            return
        }

        var artist = global.GetArtist(data.Artist)
        if artist == nil {
            http.Error(w, fmt.Sprintf("Artist %s does not exist\n", data.Artist), http.StatusBadRequest)
            return
        }

        var credit = model.Credit{
            Artist: artist,
            Role: data.Role,
            Primary: data.Primary,
        }

        err = controller.CreateCreditDB(global.DB, release.ID, artist.ID, &credit)
        if err != nil {
            fmt.Printf("Failed to create credit: %s\n", err)
            http.Error(w, http.StatusText(http.StatusInternalServerError), http.StatusInternalServerError)
            return
        }

        release.Credits = append(release.Credits, &credit)

        w.Header().Add("Content-Type", "application/json")
        w.WriteHeader(http.StatusCreated)
        err = json.NewEncoder(w).Encode(credit)
    })
}