package api

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

	"github.com/fujin/music-agregator/internal/services"
	"github.com/go-chi/chi/v5"
)

func (h *Handlers) GetAlbum(w http.ResponseWriter, r *http.Request) {
	if h.DB == nil {
		writeError(w, http.StatusServiceUnavailable, "database not connected")
		return
	}

	albumIDStr := chi.URLParam(r, "id")
	albumID, err := parseUUID(albumIDStr)
	if err != nil {
		writeError(w, http.StatusBadRequest, "invalid album ID")
		return
	}

	album, err := h.DB.GetAlbumDetailByID(r.Context(), albumID)
	if err != nil {
		writeError(w, http.StatusNotFound, "album not found")
		return
	}

	writeJSON(w, http.StatusOK, album)
}

func (h *Handlers) EditAlbum(w http.ResponseWriter, r *http.Request) {
	if h.DB == nil {
		writeError(w, http.StatusServiceUnavailable, "database not connected")
		return
	}

	albumIDStr := chi.URLParam(r, "id")
	albumID, err := parseUUID(albumIDStr)
	if err != nil {
		writeError(w, http.StatusBadRequest, "invalid album ID")
		return
	}

	var update struct {
		Monitored *bool `json:"monitored"`
	}
	if err := json.NewDecoder(r.Body).Decode(&update); err != nil {
		writeError(w, http.StatusBadRequest, "invalid request body")
		return
	}

	if update.Monitored != nil {
		if err := h.DB.UpdateAlbumMonitored(r.Context(), albumID, *update.Monitored); err != nil {
			writeError(w, http.StatusInternalServerError, err.Error())
			return
		}

		if *update.Monitored {
			hasFiles, _ := h.DB.HasTrackFiles(r.Context(), albumID)
			if !hasFiles {
				h.DB.AddToWantedAlbums(r.Context(), albumID)
			}
		} else {
			h.DB.RemoveFromWantedAlbums(r.Context(), albumID)
		}
	}

	album, err := h.DB.GetAlbumDetailByID(r.Context(), albumID)
	if err != nil {
		writeError(w, http.StatusNotFound, "album not found")
		return
	}

	writeJSON(w, http.StatusOK, album)
}

func (h *Handlers) SearchAlbum(w http.ResponseWriter, r *http.Request) {
	if h.DB == nil {
		writeError(w, http.StatusServiceUnavailable, "database not connected")
		return
	}

	albumIDStr := chi.URLParam(r, "id")
	albumID, err := parseUUID(albumIDStr)
	if err != nil {
		writeError(w, http.StatusBadRequest, "invalid album ID")
		return
	}

	result, err := services.SearchAlbum(r.Context(), albumID, h.DB, h.IndexerService)
	if err != nil {
		writeError(w, http.StatusNotFound, "album not found")
		return
	}

	writeJSON(w, http.StatusOK, result)
}