package scanner

import (
	"os"
	"path/filepath"
	"strings"
	"time"

	"github.com/pelletier/go-toml/v2"
)

type (
	Category struct {
		Name string
		Type string
		Url string
	}

	Metadata struct {
		Title string
		Date string
		Part int
		FootageDir string
		Category *Category
	}
)

func FetchVideos(directory string) ([]string, error) {
	entries, err := os.ReadDir(directory)
	if err != nil {
		return nil, err
	}

	files := []string{}

	for _, item := range entries {
		if item.IsDir() { continue }
		if !strings.HasSuffix(item.Name(), ".mkv") { continue }
		files = append(files, item.Name())
	}

	return files, nil
}

func FetchMetadata(directory string) (*Metadata, error) {
	entries, err := os.ReadDir(directory)
	if err != nil {
		return nil, err
	}

	for _, item := range entries {
		if item.IsDir() { continue }
		if item.Name() == "metadata.toml" {
			metadata, err := ParseMetadata(filepath.Join(directory, item.Name()))
			if err != nil {
				return nil, err
			}
			metadata.FootageDir = filepath.Join(directory, metadata.FootageDir)
			return metadata, nil
		}
	}

	return nil, nil
}

func ParseMetadata(filename string) (*Metadata, error) {
	metadata := &Metadata{}
	file, err := os.OpenFile(filename, os.O_RDONLY, 0o644)
	if err != nil {
		return nil, err
	}
	err = toml.NewDecoder(file).Decode(metadata)
	if err != nil {
		return nil, err
	}
	return metadata, nil
}

func DefaultMetadata() Metadata {
	return Metadata{
		Title: "Untitled Stream",
		Date: time.Now().Format("2006-01-02"),
		Part: 0,
		Category: &Category{
			Name: "Something",
			Type: "",
			Url: "",
		},
	}
}