package models

import (
	"encoding/json"
	"encoding/xml"
	"fmt"
	"os"
	"time"
)

// Target Episode XML structure:
//
//    <?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
//    <episodedetails>
//      <title>#{safe(metadata["title"])}</title>
//      <showtitle>#{safe(metadata["uploader"])}</showtitle>
//      <uniqueid type="youtube" default="true">#{safe(metadata["id"])}</uniqueid>
//      <plot>#{safe(metadata["description"])}</plot>
//      <aired>#{safe(upload_date)}</aired>
//      <season>#{safe(season)}</season>
//      <episode>#{episode}</episode>
//      <genre>YouTube</genre>
//    </episodedetails>

type Episode struct {
	XMLName    xml.Name `xml:"episodedetails"`
	Title      string   `json:"title" xml:"title"`
	ShowTitle  string   `json:"channel" xml:"showtitle"`
	Id         string   `json:"id" xml:"-"`
	UniqueId   UniqueId `json:"-" xml:"uniqueid"`
	Plot       string   `json:"description" xml:"plot"`
	UploadDate string   `json:"upload_date" xml:"-"`
	Aired      string   `json:"-" xml:"aired"`
	Season     string   `json:"-" xml:"season"`
	Episode    string   `json:"-" xml:"episode"`
	Genre      string   `json:"-" xml:"genre"`
	InfoPath   string   `json:"-" xml:"-"`
}

func LoadEpisode(info_path string) Episode {
	info, err := os.ReadFile(info_path)
	if err != nil {
		panic(err)
	}

	episode := Episode{}

	err = json.Unmarshal(info, &episode)
	if err != nil {
		panic(err)
	}

	parsed, err := time.Parse("20060102", episode.UploadDate)
	if err != nil {
		panic(err)
	}

	episode.Aired = parsed.String()
	episode.Season = fmt.Sprintf("s%d", parsed.Year())
	episode.Episode = fmt.Sprintf("e%02d%02d", parsed.Month(), parsed.Day())

	// these fields cannot be inferred
	episode.Genre = "YouTube"
	episode.UniqueId = UniqueId{
		Default: "true",
		Type:    "youtube",
		Text:    episode.Id,
	}

	episode.InfoPath = info_path

	return episode
}