package initer

import (
	"errors"
	"flag"
	"fmt"
	finstr "git.gutmet.org/finstr.git/initer"
	goutil "git.gutmet.org/goutil.git/misc"
	"git.gutmet.org/wombat.git/gallery"
	"os"
	"path/filepath"
)

const (
	initflag = ".wombat"
)

type Style int

const (
	Minimal   Style = 0
	BSStarter Style = 1
)

func templateAndCSS(style Style) (string, string) {
	switch style {
	case BSStarter:
		return bsStarterTemplate, bsStarterStyle
	case Minimal:
		fallthrough
	default:
		return defaultTemplate, defaultStyle
	}
}

var checkpaths []string = []string{initflag, "stage0", "template", "style.css"}

func dumpInitFiles(style Style) error {
	template, css := templateAndCSS(style)
	err := goutil.WriteFile("template", template)
	if err != nil {
		return err
	}
	err = goutil.WriteFile("rssTemplate", rssTemplate)
	if err != nil {
		return err
	}
	err = goutil.WriteFile("style.css", css)
	if err != nil {
		return err
	}
	err = goutil.WriteFile(filepath.Join("stage0", "index.md"), defaultIndex)
	if err != nil {
		return err
	}
	return gallery.New(finstr.IniterFlags{})
}

func isInitialized() bool {
	for _, path := range checkpaths {
		if !goutil.PathExists(path) {
			return false
		}
	}
	return true
}

func initialize(style Style) error {
	var err error
	if !isInitialized() {
		dir, err := os.Getwd()
		if err != nil {
			return err
		}
		fmt.Println("Initializing " + dir)
		err = goutil.WriteFile(initflag, "")
		if err != nil {
			return err
		}
		err = os.Mkdir("stage0", 0755)
		if err != nil {
			return err
		}
		err = os.Mkdir("stage0/blog", 0755)
		if err != nil {
			return err
		}
		err = dumpInitFiles(style)
	}
	return err
}

func InitializedOrDie() {
	if !isInitialized() {
		dir, err := os.Getwd()
		if err == nil {
			err = errors.New(dir + " is not an initialized wombat directory")
		}
		fmt.Fprintln(os.Stderr, err)
		os.Exit(1)
	}
}

type initializeFlags struct {
	style string
}

func Command() (goutil.CommandFlagsInit, goutil.CommandFunc) {
	f := initializeFlags{}
	flagsInit := func(s *flag.FlagSet) {
		s.StringVar(&f.style, "style", "minimal", "\"minimal\" or \"evil\" (Bootstrap)")
	}
	return flagsInit, func([]string) error {
		if f.style == "evil" {
			fmt.Println("You should feel bad, but anyway...")
			return initialize(BSStarter)
		} else {
			return initialize(Minimal)
		}
	}
}