package main

import (
	"encoding/json"
	"local/args"
	"local/oauth2"
	"local/storage"
	"net/http"
	"strings"
)

type Config struct {
	EmailUser string
	EmailPass string
	EmailIMAP string
	TodoAddr  string
	TodoToken string
	TodoList  string
	TodoTag   string
	Storage   storage.DB
}

var config Config

func NewConfig() Config {
	as := args.NewArgSet()

	as.Append(args.STRING, "emailuser", "email username", "breellocaldev@gmail.com")
	as.Append(args.STRING, "emailpass", "email password", "ML3WQRFSqe9rQ8qNkm")
	as.Append(args.STRING, "emailimap", "email imap", "imap.gmail.com:993")
	as.Append(args.STRING, "todoaddr", "todo addr", "https://todo-server.remote.blapointe.com")
	as.Append(args.STRING, "todopass", "todo pass", "gJtEXbbLHLf54yS9EdujtVN2n6Y")
	as.Append(args.STRING, "todotoken", "todo token", "")
	as.Append(args.STRING, "todolist", "todo list", "")
	as.Append(args.STRING, "todotag", "todo tag", "expense")

	as.Append(args.STRING, "authaddr", "auth addr", "https://auth.remote.blapointe.com")
	as.Append(args.STRING, "store", "store type", "map")
	as.Append(args.STRING, "storeaddr", "store addr", "/tmp/store")
	as.Append(args.STRING, "storeuser", "store user", "")
	as.Append(args.STRING, "storepass", "store pass", "")

	if err := as.Parse(); err != nil {
		panic(err)
	}

	token := as.GetString("todotoken")
	if len(token) == 0 {
		c := &http.Client{CheckRedirect: func(r *http.Request, via []*http.Request) error {
			return http.ErrUseLastResponse
		}}
		body := "username=" + as.GetString("todopass")
		req, err := http.NewRequest("POST", as.GetString("authaddr")+"/authorize/todo-server?"+oauth2.REDIRECT+"=127.0.0.1", strings.NewReader(body))
		if err != nil {
			panic(err)
		}
		req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
		resp, err := c.Do(req)
		if err != nil {
			panic(err)
		}
		defer resp.Body.Close()
		cookie := resp.Header.Get("Set-Cookie")
		token = cookie[strings.Index(cookie, "=")+1:]
		token = strings.Split(token, "; ")[0]
	}
	list := as.GetString("todolist")
	if len(list) == 0 {
		req, err := http.NewRequest("GET", as.GetString("todoaddr")+"/ajax.php?loadLists", nil)
		if err != nil {
			panic(err)
		}
		req.Header.Set("Cookie", oauth2.COOKIE+"="+token)
		resp, err := http.DefaultClient.Do(req)
		if err != nil {
			panic(err)
		}
		defer resp.Body.Close()
		var r struct {
			List []struct {
				ID string `json:"id"`
			} `json:"list"`
		}
		if err := json.NewDecoder(resp.Body).Decode(&r); err != nil {
			panic(err)
		}
		if len(r.List) == 0 {
			panic("no lists found")
		}
		list = r.List[0].ID
	}

	storage, err := storage.New(storage.TypeFromString(as.GetString("store")), as.GetString("storeaddr"), as.GetString("storeuser"), as.GetString("storepass"))
	if err != nil {
		panic(err)
	}

	config = Config{
		EmailUser: as.GetString("emailuser"),
		EmailPass: as.GetString("emailpass"),
		EmailIMAP: as.GetString("emailimap"),
		TodoAddr:  as.GetString("todoaddr"),
		TodoToken: token,
		TodoList:  list,
		TodoTag:   as.GetString("todotag"),
		Storage:   storage,
	}
	return config
}