/*
Copyright © 2025 Philipp Wolfer <phw@uploadedlobster.com>

This file is part of Scotty.

Scotty is free software: you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or (at your option) any later version.

Scotty is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with
Scotty. If not, see <https://www.gnu.org/licenses/>.
*/

package spotifyhistory

import (
	"errors"
	"sort"

	"go.uploadedlobster.com/scotty/internal/archive"
)

var historyFileGlobs = []string{
	"Spotify Extended Streaming History/Streaming_History_Audio_*.json",
	"Streaming_History_Audio_*.json",
}

// Access a Spotify history archive.
// This can be either the ZIP file as provided by Spotify
// or a directory where this was extracted to.
type HistoryArchive struct {
	backend archive.Archive
}

// Open a Spotify history archive from file path.
func OpenHistoryArchive(path string) (*HistoryArchive, error) {
	backend, err := archive.OpenArchive(path)
	if err != nil {
		return nil, err
	}

	return &HistoryArchive{backend: backend}, nil
}

func (h *HistoryArchive) GetHistoryFiles() ([]archive.FileInfo, error) {
	for _, glob := range historyFileGlobs {
		files, err := h.backend.Glob(glob)
		if err != nil {
			return nil, err
		}

		if len(files) > 0 {
			sort.Slice(files, func(i, j int) bool {
				return files[i].Name < files[j].Name
			})
			return files, nil
		}
	}

	// Found no files, fail
	return nil, errors.New("found no history files in archive")
}

func readHistoryFile(f archive.OpenableFile) (StreamingHistory, error) {
	file, err := f.Open()
	if err != nil {
		return nil, err
	}

	defer file.Close()
	history := StreamingHistory{}
	err = history.Read(file)
	if err != nil {
		return nil, err
	}

	return history, nil
}