package config

import (
	"io/ioutil"
	"os"

	polochon "github.com/odwrtw/polochon/lib"
	"github.com/odwrtw/polochon/modules/eztv"
	"github.com/odwrtw/polochon/modules/tmdb"
	"github.com/odwrtw/polochon/modules/trakttv"
	"github.com/odwrtw/polochon/modules/tvdb"
	"github.com/odwrtw/polochon/modules/yts"

	"gopkg.in/yaml.v2"
)

// Config represents the Config of the canape app
type Config struct {
	Authorizer      AuthorizerConfig `yaml:"authorizer"`
	PGDSN           string           `yaml:"pgdsn"`
	Port            string           `yaml:"listen_port"`
	TraktTVClientID string           `yaml:"trakttv_client_id"`
	PublicDir       string           `yaml:"public_dir"`

	// TODO improve the detailers and torrenters configurations
	TmdbAPIKey      string `yaml:"tmdb_api_key"`
	MovieExplorers  []polochon.Explorer
	MovieDetailers  []polochon.Detailer
	MovieTorrenters []polochon.Torrenter
	MovieSearchers  []polochon.Searcher
	ShowExplorers   []polochon.Explorer
	ShowDetailers   []polochon.Detailer
	ShowTorrenters  []polochon.Torrenter
	ShowSearchers   []polochon.Searcher
}

// AuthorizerConfig is the config for the authentication
type AuthorizerConfig struct {
	Pepper string `yaml:"pepper"`
	Cost   int    `yaml:"cost"`
	Secret string `yaml:"secret"`
}

// Load loads a config file from a path and return a Config object
func Load(path string) (*Config, error) {
	// Open the file
	file, err := os.Open(path)
	if err != nil {
		return nil, err
	}
	defer file.Close()

	cf := &Config{}

	// Read it
	b, err := ioutil.ReadAll(file)
	if err != nil {
		return nil, err
	}

	// Unmarshal its content
	err = yaml.Unmarshal(b, cf)
	if err != nil {
		return nil, err
	}

	// Initialize the default values

	// Default movie detailers
	cf.MovieDetailers = []polochon.Detailer{}
	if cf.TmdbAPIKey != "" {
		d, err := tmdb.New(
			&tmdb.Params{
				ApiKey: cf.TmdbAPIKey,
			},
		)
		if err != nil {
			return nil, err
		}
		cf.MovieDetailers = append(cf.MovieDetailers, d)
	}

	// Default movie explorers
	cf.MovieExplorers = []polochon.Explorer{}
	ytsExp, err := yts.NewExplorer()
	if err != nil {
		return nil, err
	}
	cf.MovieExplorers = append(cf.MovieExplorers, ytsExp)
	if cf.TraktTVClientID != "" {
		traktExp, err := trakttv.NewExplorer(&trakttv.Params{
			ClientID: cf.TraktTVClientID,
		})
		if err != nil {
			return nil, err
		}
		cf.MovieExplorers = append(cf.MovieExplorers, traktExp)
	}

	// Default movie torrenters
	cf.MovieTorrenters = []polochon.Torrenter{}
	d, err := yts.New()
	if err != nil {
		return nil, err
	}
	cf.MovieTorrenters = append(cf.MovieTorrenters, d)

	// Default movie searchers
	cf.MovieSearchers = []polochon.Searcher{}
	movieSearcher, err := yts.NewSearcher()
	if err != nil {
		return nil, err
	}
	cf.MovieSearchers = append(cf.MovieSearchers, movieSearcher)

	// Default show searchers
	cf.ShowSearchers = []polochon.Searcher{}
	showSearcher, err := eztv.NewSearcher()
	if err != nil {
		return nil, err
	}
	cf.ShowSearchers = append(cf.ShowSearchers, showSearcher)

	// Default show explorers
	cf.ShowExplorers = []polochon.Explorer{}
	eztvExp, err := eztv.NewExplorer()
	if err != nil {
		return nil, err
	}
	cf.ShowExplorers = append(cf.ShowExplorers, eztvExp)
	if cf.TraktTVClientID != "" {
		traktExp, err := trakttv.NewExplorer(&trakttv.Params{
			ClientID: cf.TraktTVClientID,
		})
		if err != nil {
			return nil, err
		}
		cf.ShowExplorers = append(cf.ShowExplorers, traktExp)
	}

	// Default show detailers
	cf.ShowDetailers = []polochon.Detailer{}
	showDetailer, err := tvdb.NewDetailer()
	if err != nil {
		return nil, err
	}
	cf.ShowDetailers = append(cf.ShowDetailers, showDetailer)

	// Default show torrenters
	cf.ShowTorrenters = []polochon.Torrenter{}
	showTorrenter, err := eztv.New()
	if err != nil {
		return nil, err
	}
	cf.ShowTorrenters = append(cf.ShowTorrenters, showTorrenter)

	return cf, nil
}