// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

package main

/*
   Generate the tasks.json file.
*/

import (
	"context"
	"flag"
	"fmt"
	"io/ioutil"
	"os"
	"path"

	"github.com/golang/glog"

	"go.skia.org/infra/go/common"
	"go.skia.org/infra/go/exec"
	"go.skia.org/infra/go/util"
	"go.skia.org/infra/task_scheduler/go/specs"
)

func main() {
	common.Init()

	root, err := specs.GetCheckoutRoot()
	if err != nil {
		glog.Fatal(err)
	}

	skiaDir := path.Join(root, "..", "skia")
	if _, err := os.Stat(skiaDir); err != nil {
		glog.Fatalf("Unable to find Skia checkout in %s; you probably need to run 'gclient sync'.")
	}

	infraBots := path.Join(root, "infra", "bots")

	// Copy aux file into same dir as gen_tasks.go.
	auxPath := path.Join(skiaDir, "infra", "bots", "gen_tasks_aux.go")
	if aux, err := ioutil.ReadFile(path.Join(infraBots, "gen_tasks_aux.go")); err != nil {
		glog.Fatalf("Unable to read gen_tasks_aux.go in %s: %s", infraBots, err)
	} else {
		if err := ioutil.WriteFile(auxPath, aux, os.ModePerm); err != nil {
			glog.Fatalf("Unable to write gen_tasks_aux.go to %s: %s", path.Join(skiaDir, "infra", "bots"), err)
		}
	}
	defer util.RemoveAll(auxPath)

	args := []string{
		"go", "run", path.Join(skiaDir, "infra", "bots", "gen_tasks.go"), auxPath,
		fmt.Sprintf("--builder_name_schema=%s", path.Join(skiaDir, "infra", "bots", "recipe_modules", "builder_name_schema", "builder_name_schema.json")),
		fmt.Sprintf("--assets_dir=%s", path.Join(skiaDir, "infra", "bots", "assets")),
		fmt.Sprintf("--cfg_file=%s", path.Join(infraBots, "cfg.json")),
		fmt.Sprintf("--jobs=%s", path.Join(infraBots, "jobs.json")),
		"--logtostderr",
	}

	test := flag.Lookup("test")
	if test != nil && test.Value.String() == "true" {
		args = append(args, "--test")
	}
	if _, err := exec.RunCwd(context.Background(), root, args...); err != nil {
		glog.Fatalf("Failed to run gen_tasks.go in skia.git: %s", err)
	}
}