// Package client provides methods for interacting with Yandex Music API endpoints.
package client

import (
	"context"
	"fmt"

	"gitea.mrixs.me/Mrixs/yandex-music-api-go/internal/models"
	"gitea.mrixs.me/Mrixs/yandex-music-api-go/internal/utils"
)

// GetArtists gets artists by their IDs (GET /tracks?artist-ids=...).
// Returns a slice of Artist pointers, or nil if no IDs are provided.
func (c *Client) GetArtists(ctx context.Context, artistIDs []string) ([]*models.Artist, error) {
	if len(artistIDs) == 0 {
		return nil, nil
	}

	params := map[string]string{
		"artist-ids": joinIDs(artistIDs),
	}

	var result []models.Artist
	if err := c.request.Get(ctx, "/artists", params, &result); err != nil {
		return nil, err
	}

	artists := make([]*models.Artist, len(result))
	for i := range result {
		result[i].SetClient(c)
		artists[i] = &result[i]
	}
	return artists, nil
}

// GetArtist gets a single artist by ID using GetArtists.
// Returns an error if no artist is found with the given ID.
func (c *Client) GetArtist(ctx context.Context, artistID string) (*models.Artist, error) {
	artists, err := c.GetArtists(ctx, []string{artistID})
	if err != nil {
		return nil, err
	}
	if len(artists) == 0 {
		return nil, utils.NewYandexMusicError("artist not found", utils.ErrNotFound)
	}
	return artists[0], nil
}

// GetArtistAlbums gets albums by an artist (GET /artists/{artist_id}/direct-albums).
// The page and pageSize parameters control pagination.
func (c *Client) GetArtistAlbums(ctx context.Context, artistID string, page, pageSize int) (*models.ArtistAlbums, error) {
	params := map[string]string{
		"page":      fmt.Sprintf("%d", page),
		"page-size": fmt.Sprintf("%d", pageSize),
	}

	var result models.ArtistAlbums
	if err := c.request.Get(ctx, fmt.Sprintf("/artists/%s/direct-albums", artistID), params, &result); err != nil {
		return nil, err
	}
	result.SetClient(c)
	return &result, nil
}

// GetArtistTracks gets tracks by an artist (GET /artists/{artist_id}/tracks).
// The page and pageSize parameters control pagination.
func (c *Client) GetArtistTracks(ctx context.Context, artistID string, page, pageSize int) (*models.ArtistTracks, error) {
	params := map[string]string{
		"page":      fmt.Sprintf("%d", page),
		"page-size": fmt.Sprintf("%d", pageSize),
	}

	var result models.ArtistTracks
	if err := c.request.Get(ctx, fmt.Sprintf("/artists/%s/tracks", artistID), params, &result); err != nil {
		return nil, err
	}
	result.SetClient(c)
	return &result, nil
}