package config

import "os"
import "io"
import "github.com/BurntSushi/toml"
import "github.com/go-yaml/yaml"
import "github.com/alecthomas/hcl"

func LoadTomlFileName(name string) (*Config, error) {
	conf := &Config{}
	fin, err := os.Open(name)
	if err != nil {
		return nil, err
	}
	defer fin.Close()
	dec := toml.NewDecoder(fin)
	_, err = dec.Decode(conf)
	return conf, err
}

func (c Config) SaveTomlFileName(name string) error {
	fin, err := os.Create(name)
	if err != nil {
		return err
	}
	defer fin.Close()
	dec := toml.NewEncoder(fin)
	err = dec.Encode(c)
	return err
}

func (c Config) SaveYamlFileName(name string) error {
	fin, err := os.Create(name)
	if err != nil {
		return err
	}
	defer fin.Close()
	dec := yaml.NewEncoder(fin)
	defer dec.Close()
	err = dec.Encode(c)
	return err
}

func LoadYamlFileName(name string) (*Config, error) {
	conf := &Config{}
	fin, err := os.Open(name)
	if err != nil {
		return nil, err
	}
	defer fin.Close()
	dec := yaml.NewDecoder(fin)
	err = dec.Decode(conf)
	return conf, err
}

func (c *Config) SaveHclFileName(name string) error {
	fin, err := os.Create(name)
	if err != nil {
		return err
	}
	defer fin.Close()
	buf, err := hcl.Marshal(c, hcl.InferHCLTags(true))
	if err != nil {
		return err
	}
	_, err = fin.Write(buf)
	return err
}

func LoadHclFileName(name string) (*Config, error) {
	conf := &Config{}
	fin, err := os.Open(name)
	if err != nil {
		return nil, err
	}
	defer fin.Close()
	buf, err := io.ReadAll(fin)
	if err != nil {
		return nil, err
	}
	err = hcl.Unmarshal(buf, conf, hcl.InferHCLTags(true))
	return conf, err
}

type Net struct {
	Id      *int
	Listen  string
	As      string
	Command string
}

type Io struct {
	Name string
	Mime string
}

type Skill struct {
	Name    string
	Inputs  []Io
	Outputs []Io
}

type Peer struct {
	As     string
	Skills []Skill
}

type Step struct {
	Type string
	Cmd  string
}

type Job struct {
	Skill `toml:"skill"`
	Step  []Step
}

type State struct {
	Name  string
	Kind  string
	Order int
}

type Config struct {
	Net    `toml:"net"`
	Peers  []Peer  `toml:"peers"`
	Jobs   []Job   `toml:"jobs"`
	States []State `toml:"states"`
}