package api

import (
	"encoding/json"
	"fmt"
	"strings"
	"time"

	"srs.epita.fr/fic-server/libfic"

	"github.com/julienschmidt/httprouter"
)

func init() {
	router.GET("/api/teams.json", apiHandler(
		func(httprouter.Params, []byte) (interface{}, error) {
			return fic.ExportTeams()
		}))
	router.GET("/api/teams-binding", apiHandler(
		func(httprouter.Params, []byte) (interface{}, error) {
			return bindingTeams()
		}))
	router.GET("/api/teams-nginx-members", apiHandler(
		func(httprouter.Params, []byte) (interface{}, error) {
			return nginxGenMember()
		}))
	router.GET("/api/teams-tries.json", apiHandler(
		func(httprouter.Params, []byte) (interface{}, error) {
			return fic.GetTries(nil, nil)
		}))

	router.GET("/api/teams/", apiHandler(
		func(httprouter.Params, []byte) (interface{}, error) {
			return fic.GetTeams()
		}))
	router.POST("/api/teams/", apiHandler(createTeam))

	router.GET("/api/teams/:tid/", apiHandler(teamHandler(
		func(team fic.Team, _ []byte) (interface{}, error) {
			return team, nil
		})))
	router.PUT("/api/teams/:tid/", apiHandler(teamHandler(updateTeam)))
	router.POST("/api/teams/:tid/", apiHandler(teamHandler(addTeamMember)))
	router.DELETE("/api/teams/:tid/", apiHandler(teamHandler(
		func(team fic.Team, _ []byte) (interface{}, error) {
			return team.Delete()
		})))
	router.GET("/api/teams/:tid/my.json", apiHandler(teamPublicHandler(
		func(team *fic.Team, _ []byte) (interface{}, error) {
			return fic.MyJSONTeam(team, true)
		})))
	router.GET("/api/teams/:tid/wait.json", apiHandler(teamPublicHandler(
		func(team *fic.Team, _ []byte) (interface{}, error) {
			return fic.MyJSONTeam(team, false)
		})))
	router.GET("/api/teams/:tid/stats.json", apiHandler(teamPublicHandler(
		func(team *fic.Team, _ []byte) (interface{}, error) {
			if team != nil {
				return team.GetStats()
			} else {
				return fic.GetTeamsStats(nil)
			}
		})))
	router.GET("/api/teams/:tid/history.json", apiHandler(teamPublicHandler(
		func(team *fic.Team, _ []byte) (interface{}, error) {
			if team != nil {
				return team.GetHistory()
			} else {
				return fic.GetTeamsStats(nil)
			}
		})))
	router.DELETE("/api/teams/:tid/history.json", apiHandler(teamPublicHandler(delHistory)))
	router.GET("/api/teams/:tid/tries", apiHandler(teamPublicHandler(
		func(team *fic.Team, _ []byte) (interface{}, error) {
			return fic.GetTries(team, nil)
		})))
	router.GET("/api/teams/:tid/members", apiHandler(teamHandler(
		func(team fic.Team, _ []byte) (interface{}, error) {
			return team.GetMembers()
		})))
	router.POST("/api/teams/:tid/members", apiHandler(teamHandler(addTeamMember)))
	router.PUT("/api/teams/:tid/members", apiHandler(teamHandler(setTeamMember)))
}

func nginxGenMember() (string, error) {
	if teams, err := fic.GetTeams(); err != nil {
		return "", err
	} else {
		ret := ""
		for _, team := range teams {
			if members, err := team.GetMembers(); err == nil {
				for _, member := range members {
					ret += fmt.Sprintf("        if ($remote_user = \"%s\") { set $team \"%d\"; }\n", member.Nickname, team.Id)
				}
			} else {
				return "", err
			}
		}

		return ret, nil
	}
}

func bindingTeams() (string, error) {
	if teams, err := fic.GetTeams(); err != nil {
		return "", err
	} else {
		ret := ""
		for _, team := range teams {
			if members, err := team.GetMembers(); err != nil {
				return "", err
			} else {
				var mbs []string
				for _, member := range members {
					mbs = append(mbs, fmt.Sprintf("%s %s", member.Firstname, member.Lastname))
				}
				ret += fmt.Sprintf("%d;%s;%s\n", team.Id, team.Name, strings.Join(mbs, ";"))
			}
		}
		return ret, nil
	}
}

type uploadedTeam struct {
	Name  string
	Color uint32
}

type uploadedMember struct {
	Firstname string
	Lastname  string
	Nickname  string
	Company   string
}

func createTeam(_ httprouter.Params, body []byte) (interface{}, error) {
	var ut uploadedTeam
	if err := json.Unmarshal(body, &ut); err != nil {
		return nil, err
	}

	return fic.CreateTeam(strings.TrimSpace(ut.Name), ut.Color)
}

func updateTeam(team fic.Team, body []byte) (interface{}, error) {
	var ut fic.Team
	if err := json.Unmarshal(body, &ut); err != nil {
		return nil, err
	}

	ut.Id = team.Id

	if _, err := ut.Update(); err != nil {
		return nil, err
	}

	return ut, nil
}

func addTeamMember(team fic.Team, body []byte) (interface{}, error) {
	var members []uploadedMember
	if err := json.Unmarshal(body, &members); err != nil {
		return nil, err
	}

	for _, member := range members {
		team.AddMember(strings.TrimSpace(member.Firstname), strings.TrimSpace(member.Lastname), strings.TrimSpace(member.Nickname), strings.TrimSpace(member.Company))
	}

	return team.GetMembers()
}

func setTeamMember(team fic.Team, body []byte) (interface{}, error) {
	var members []uploadedMember
	if err := json.Unmarshal(body, &members); err != nil {
		return nil, err
	}

	team.ClearMembers()
	for _, member := range members {
		team.AddMember(strings.TrimSpace(member.Firstname), strings.TrimSpace(member.Lastname), strings.TrimSpace(member.Nickname), strings.TrimSpace(member.Company))
	}

	return team.GetMembers()
}

type uploadedHistory struct {
	Kind      string
	Time      time.Time
	Primary   *int64
	Secondary *int64
}

func delHistory(team *fic.Team, body []byte) (interface{}, error) {
	var uh uploadedHistory
	if err := json.Unmarshal(body, &uh); err != nil {
		return nil, err
	}

	return team.DelHistoryItem(uh.Kind, uh.Time, uh.Primary, uh.Secondary)
}