package discord

import (
	"errors"
	"fmt"
	"log"
	"regexp"
	"strings"

	dsmodel "dorisbot/models/discord"
	pubmodel "dorisbot/models/public"
	"dorisbot/pkg/cmdparser"

	"github.com/bwmarrin/discordgo"
)

var tagRagexp = regexp.MustCompile("<@([0-9]+)>")

func getTagBot(msg string) bool {
	ids := tagRagexp.FindAllString(msg, -1)
	if len(ids) == 0 {
		return false
	}

	for _, id := range ids {
		if id == client.ID {
			return true
		}
	}

	return false
}

func getCMD(str string) (cmd string, keyword bool) {
	cmd = ""
	keyword = false
	charNumber := []rune(str)[0]
	if charNumber == 33 || charNumber == 65218 {
		keyword = true
		if charNumber == 65218 {
			cmd = str[3:]
		} else {
			cmd = str[1:]
		}
	} else {
		cmd = str
	}

	return
}

func getRegServerCommandAction(s *discordgo.Session, msgEvt *discordgo.MessageCreate, server *dsmodel.ServerModel, cmd string) (c *pubmodel.CommandModel, acts []*cmdparser.CmdAction, err error) {
	cmds, err := pubmodel.GetCommandByPlatformBinding(cmd, server.ID, "discord")
	if err != nil {
		log.Println("get command err :: ", err)
		return
	}
	if len(cmds) == 0 {
		log.Printf("no command found {%s}\n", cmd)
		return
	}
	c = cmds[0]

	if c.RequireManage && server.Owner != msgEvt.Author.ID {
		roles, err := server.GetRoleList()
		if err != nil {
			log.Println("get server role err :: ", err)
			return nil, nil, err
		}
		rolePass := false
		if len(roles) > 0 {
			uinfo, err := s.GuildMember(msgEvt.GuildID, msgEvt.Author.ID)
			if err != nil {
				log.Println("get guild user info err :: ", err)
				return nil, nil, err
			}
			if len(uinfo.Roles) > 0 {
				allPass := false
				for _, it := range roles {
					if allPass {
						break
					}
					for _, rid := range uinfo.Roles {
						if it.RoleID == rid {
							rolePass = true
							break
						}
					}
				}
			}
		}
		if !rolePass {
			s := fmt.Sprintf("{%s} require manage role", cmd)
			log.Println(s)
			return nil, nil, errors.New(s)
		}
	}

	acts = cmdparser.ParseCmdAction(c.Value)
	return c, acts, nil
}

func getNotInitServerCommandAction(s *discordgo.Session, msgEvt *discordgo.MessageCreate, cmd string) (c *pubmodel.CommandModel, acts []*cmdparser.CmdAction, err error) {
	cmds, err := pubmodel.GetGlobalCommand(cmd)
	if err != nil {
		log.Println("get command fail :: ", err)
		return nil, nil, err
	}
	if len(cmds) == 0 {
		s := fmt.Sprintf("no command found {%s}", cmd)
		log.Println(s)
		return nil, nil, errors.New(s)
	}
	c = cmds[0]
	if c.RequireInit {
		s := fmt.Sprintf("{%s} require init server", cmd)
		log.Println(s)
		return nil, nil, errors.New(s)
	}

	if c.RequireManage {
		ginfo, err := s.Guild(msgEvt.GuildID)
		if err != nil {
			log.Println("get guild info err :: ", err)
			return nil, nil, err
		}
		if ginfo.OwnerID != msgEvt.Author.ID {
			s := fmt.Sprintf("{%s} require manage permission", cmd)
			log.Println(s)
			return nil, nil, errors.New(s)
		}
	}

	acts = cmdparser.ParseCmdAction(c.Value)
	return c, acts, nil
}

func parseTextMessage(msg string) (cmd string, keyword bool, payload string) {
	tagBot := getTagBot(msg)
	_ = tagBot
	msg = strings.TrimSpace(tagRagexp.ReplaceAllString(msg, ""))

	strs := strings.Split(msg, " ")

	cmd, keyword = getCMD(strs[0])

	payload = strings.Join(strs[1:], " ")

	return
}

func selectAction(info EvtInfo, cmdKey, cmdValue, payload string) string {
	switch cmdKey {
	case "ds_addserver":
		return addServer(info, payload)
	case "ds_addchannel":
		strs := strings.Split(payload, " ")
		if len(strs) != 2 {
			return "!ds_addchennel {enable_cmd} {enable_notify}"
		}
		return addChannel(info, strs[0], strs[1])
	case "ds_addfacebook":
		strs := strings.Split(payload, " ")
		if len(strs) < 2 {
			return "!ds_addfacebook {facebook_id} {template}"
		}
		return addFacebookPage(info, strs[0], strings.Join(strs[1:], " "))
	case "ds_delfacebook":
		return delFacebookPage(info, payload)
	case "ds_addinstagram":
		strs := strings.Split(payload, " ")
		if len(strs) < 2 {
			return "!ds_addinstagram {instagram_id} {template}"
		}
		return addInstagram(info, strs[0], strings.Join(strs[1:], " "))
	case "ds_delinstagram":
		return delInstagram(info, payload)
	}

	return ""
}