package task

import (
	"context"
	"fmt"
	"os"
	"path/filepath"

	"git.lastassault.de/speatzle/morffix/config"
	"git.lastassault.de/speatzle/morffix/constants"
	"git.lastassault.de/speatzle/morffix/task/log"
	"git.lastassault.de/speatzle/morffix/types"
)

func RunTranscode(conf config.Config, t *types.Task, data types.TranscodeData) {
	ctx := context.TODO()
	l := log.GetTaskLogger(t)

	// TODO Figure out how to get correct file ending
	src_path := filepath.Join(conf.Worker.TempDir, fmt.Sprintf("morffix-src-%v-%v."+t.FileExtension, t.ID, t.FileID))
	dst_path := filepath.Join(conf.Worker.TempDir, fmt.Sprintf("morffix-dst-%v-%v."+t.FileExtension, t.ID, t.FileID))

	// Set ffmpeg input path
	if len(t.FfmpegCommand.InputFiles) == 0 {
		l.ErrorContext(ctx, "FFmpeg Command has no input files", "command", t.FfmpegCommand)
		return
	}

	t.FfmpegCommand.InputFiles[0].Path = src_path

	// Set ffmpeg output path
	if len(t.FfmpegCommand.OutputFiles) == 0 {
		l.ErrorContext(ctx, "FFmpeg Command has no output files", "command", t.FfmpegCommand)
		return
	}

	t.FfmpegCommand.OutputFiles[0].Path = dst_path

	// TODO cleanup file when done
	defer func() {
		err := os.Remove(src_path)
		if err != nil {
			l.ErrorContext(ctx, "Removing Source File", "err", err, "path", src_path)
		} else {
			l.InfoContext(ctx, "Source File Removed Succesfully", "path", src_path)
		}
	}()

	err := downloadFile(ctx, l, conf, src_path, t)
	if err != nil {
		l.ErrorContext(ctx, "Source File Download Failed", "err", err)
		return
	}

	// TODO cleanup file when done
	defer func() {
		err := os.Remove(dst_path)
		if err != nil {
			l.ErrorContext(ctx, "Removing Destination File", "err", err, "path", dst_path)
		} else {
			l.InfoContext(ctx, "File Destination Removed Succesfully", "path", dst_path)
		}
	}()

	err = runFfmpegCommand(ctx, l, conf, t.FfmpegCommand)
	if err != nil {
		l.ErrorContext(ctx, "FFmpeg Failed", "err", err)
		return
	}

	hash, err := hashFile(dst_path)
	if err != nil {
		l.ErrorContext(ctx, "Generating Hash", "err", err)
		return
	}

	err = uploadFile(ctx, l, conf, dst_path, t, hash)
	if err != nil {
		l.ErrorContext(ctx, "File Upload Failed", "err", err)
		return
	}

	l.InfoContext(ctx, "Task Success")
	t.Status = constants.TASK_STATUS_SUCCESS
}