package config

import (
  "flag"
  "log"
  "github.com/BurntSushi/toml"
)

type config struct {
  Test int
  TestStart int
  InitOutdir bool
  Debug int
  Progress bool
  ConfigPath string

  Scale string
  VideoBitrate int
  AudioBitrate int
  Speed string
  CleanFilename bool
  CRF int
  FPS int
  Tune string
  Input string
  Output string
}

var Settings config

func parseFlags(c *config) {
  flag.IntVar(&c.Test, "test", 0,  "Make a test video <int> seconds long.")
  flag.IntVar(&c.TestStart, "test-start", 60,  "When to start the test clip.")
  flag.BoolVar(&c.InitOutdir, "init-outdir", false,  "if outdir doesn't exist create it")
  flag.IntVar(&c.Debug, "debug", 0, "1=print the ffmpeg command, 2=and its stderr output")
  flag.BoolVar(&c.Progress, "progress", false,  "Show percent progress.  Not accurate (thanks ffmpeg)")
  flag.StringVar(&c.ConfigPath, "config", "config.toml",  "config.toml to load")

  flag.Parse()
}

func Load() {
  parseFlags(&Settings)

  metadata, err := toml.DecodeFile(Settings.ConfigPath, &Settings)

  if err != nil {
    log.Fatalf("error loading config.toml: %v", err)
  }

  bad_keys := metadata.Undecoded()

  if len(bad_keys) > 0 {
    log.Fatalf("unknown configuration keys: %v", bad_keys);
  }
}