// Copyright 2022 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.

package main

import (
	"flag"
	"time"
)

// config is used to run chaos tests.
type config struct {
	*flag.FlagSet `toml:"-" yaml:"-" json:"-"`

	Addr             string `toml:"addr" yaml:"addr" json:"addr"`
	BusinessMetaAddr string `toml:"business-meta-addr" yaml:"business-meta-addr" json:"business-meta-addr"`
	EtcdAddr         string `toml:"etcd-addr" yaml:"etcd-addr" json:"etcd-addr"`

	Duration time.Duration `toml:"duration" yaml:"duration" json:"duration"`

	MasterCount int `toml:"master-count" yaml:"master-count" json:"master-count"`
	WorkerCount int `toml:"worker-count" yaml:"worker-count" json:"worker-count"`

	ConfigDir string `toml:"config-dir" yaml:"config-dir" json:"config-dir"`
}

// newConfig creates a config for this chaos testing suite.
func newConfig() *config {
	cfg := &config{}
	cfg.FlagSet = flag.NewFlagSet("chaos-case", flag.ContinueOnError)
	fs := cfg.FlagSet

	fs.StringVar(&cfg.Addr, "addr", "chaos-server-master:10240", "address of server-master")
	fs.StringVar(&cfg.EtcdAddr, "etcd-addr", "chaos-metastore-etcd:12479", "address of etcd server(used by fake job)")
	// business metastore also uses mysql now
	fs.StringVar(&cfg.BusinessMetaAddr, "business-meta-addr", "chaos-metastore-mysql:3306", "address of business metastore")
	fs.DurationVar(&cfg.Duration, "duration", 20*time.Minute, "duration of cases running")

	fs.IntVar(&cfg.MasterCount, "master-count", 3, "expect count of server-master")
	fs.IntVar(&cfg.WorkerCount, "worker-count", 4, "expect count of executor")
	fs.StringVar(&cfg.ConfigDir, "config-dir", "/", "path of the source and task config files")

	return cfg
}

// parse parses flag definitions from the argument list.
func (c *config) parse(args []string) error {
	return c.FlagSet.Parse(args)
}