package event

import (
	"nixcn-cms/data"
	"nixcn-cms/internal/exception"
	"nixcn-cms/utils"
	"time"

	"github.com/gin-gonic/gin"
	"github.com/google/uuid"
)

func Checkin(c *gin.Context) {
	data := new(data.Attendance)
	userIdOrig, ok := c.Get("user_id")
	if !ok {
		errorCode := new(exception.Builder).
			SetStatus(exception.StatusUser).
			SetService(exception.ServiceEvent).
			SetEndpoint(exception.EndpointEventServiceCheckin).
			SetType(exception.TypeCommon).
			SetOriginal(exception.CommonErrorMissingUserId).
			Build(c)
		utils.HttpResponse(c, 403, errorCode)
		return
	}
	userId, err := uuid.Parse(userIdOrig.(string))
	if err != nil {
		errorCode := new(exception.Builder).
			SetStatus(exception.StatusServer).
			SetService(exception.ServiceEvent).
			SetEndpoint(exception.EndpointEventServiceCheckin).
			SetType(exception.TypeCommon).
			SetOriginal(exception.CommonErrorUuidParseFailed).
			SetError(err).
			Build(c)
		utils.HttpResponse(c, 500, errorCode)
	}

	// Get event id from query
	eventIdOrig, ok := c.GetQuery("event_id")
	if !ok {
		errorCode := new(exception.Builder).
			SetStatus(exception.StatusUser).
			SetService(exception.ServiceEvent).
			SetEndpoint(exception.EndpointEventServiceCheckin).
			SetType(exception.TypeCommon).
			SetOriginal(exception.CommonErrorInvalidInput).
			Build(c)
		utils.HttpResponse(c, 400, errorCode)
		return
	}

	// Parse event id to uuid
	eventId, err := uuid.Parse(eventIdOrig)
	if err != nil {
		errorCode := new(exception.Builder).
			SetStatus(exception.StatusServer).
			SetService(exception.ServiceEvent).
			SetEndpoint(exception.EndpointEventServiceCheckin).
			SetType(exception.TypeCommon).
			SetOriginal(exception.CommonErrorUuidParseFailed).
			SetError(err).
			Build(c)
		utils.HttpResponse(c, 500, errorCode)
		return
	}
	data.UserId = userId
	code, err := data.GenCheckinCode(c, eventId)
	if err != nil {
		errorCode := new(exception.Builder).
			SetStatus(exception.StatusServer).
			SetService(exception.ServiceEvent).
			SetEndpoint(exception.EndpointEventServiceCheckin).
			SetType(exception.TypeSpecific).
			SetOriginal(exception.EventCheckinGenCodeFailed).
			SetError(err).
			Build(c)
		utils.HttpResponse(c, 500, errorCode)
		return
	}

	checkinCodeResp := struct {
		CheckinCode *string `json:"checkin_code"`
	}{code}
	utils.HttpResponse(c, 200, "", "success", checkinCodeResp)
}

func CheckinSubmit(c *gin.Context) {
	var req struct {
		ChekinCode string `json:"checkin_code"`
	}
	c.ShouldBindJSON(&req)

	attendanceData := new(data.Attendance)
	err := attendanceData.VerifyCheckinCode(c, req.ChekinCode)
	if err != nil {
		errorCode := new(exception.Builder).
			SetStatus(exception.StatusUser).
			SetService(exception.ServiceEvent).
			SetEndpoint(exception.EndpointEventServiceCheckinSubmit).
			SetType(exception.TypeCommon).
			SetOriginal(exception.CommonErrorInvalidInput).
			SetError(err).
			Build(c)
		utils.HttpResponse(c, 400, errorCode)
		return
	}

	utils.HttpResponse(c, 200, "", "success")
}

func CheckinQuery(c *gin.Context) {
	userIdOrig, ok := c.Get("user_id")
	if !ok {
		errorCode := new(exception.Builder).
			SetStatus(exception.StatusUser).
			SetService(exception.ServiceEvent).
			SetEndpoint(exception.EndpointEventServiceCheckinQuery).
			SetType(exception.TypeCommon).
			SetOriginal(exception.CommonErrorMissingUserId).
			Build(c)
		utils.HttpResponse(c, 400, errorCode)
		return
	}
	userId, err := uuid.Parse(userIdOrig.(string))
	if err != nil {
		errorCode := new(exception.Builder).
			SetStatus(exception.StatusServer).
			SetService(exception.ServiceEvent).
			SetEndpoint(exception.EndpointEventServiceCheckinQuery).
			SetType(exception.TypeCommon).
			SetOriginal(exception.CommonErrorUuidParseFailed).
			SetError(err).
			Build(c)
		utils.HttpResponse(c, 500, errorCode)
		return
	}

	eventIdOrig, ok := c.GetQuery("event_id")
	if !ok {
		errorCode := new(exception.Builder).
			SetStatus(exception.StatusUser).
			SetService(exception.ServiceEvent).
			SetEndpoint(exception.EndpointEventServiceCheckinQuery).
			SetType(exception.TypeCommon).
			SetOriginal(exception.CommonErrorInvalidInput).
			Build(c)
		utils.HttpResponse(c, 400, errorCode)
		return
	}
	eventId, err := uuid.Parse(eventIdOrig)
	if err != nil {
		errorCode := new(exception.Builder).
			SetStatus(exception.StatusUser).
			SetService(exception.ServiceEvent).
			SetEndpoint(exception.EndpointEventServiceCheckinQuery).
			SetType(exception.TypeCommon).
			SetOriginal(exception.CommonErrorInvalidInput).
			SetError(err).
			Build(c)
		utils.HttpResponse(c, 400, errorCode)
		return
	}

	attendanceData := new(data.Attendance)
	attendance, err := attendanceData.GetAttendance(c, userId, eventId)

	if err != nil {
		errorCode := new(exception.Builder).
			SetStatus(exception.StatusServer).
			SetService(exception.ServiceEvent).
			SetEndpoint(exception.EndpointEventServiceCheckinQuery).
			SetType(exception.TypeCommon).
			SetOriginal(exception.CommonErrorDatabase).
			SetError(err).
			Build(c)
		utils.HttpResponse(c, 500, errorCode)
		return
	} else if attendance == nil {
		errorCode := new(exception.Builder).
			SetStatus(exception.StatusUser).
			SetService(exception.ServiceEvent).
			SetEndpoint(exception.EndpointEventServiceCheckinQuery).
			SetType(exception.TypeSpecific).
			SetOriginal(exception.EventCheckinQueryRecordNotFound).
			Build(c)
		utils.HttpResponse(c, 404, errorCode)
		return
	} else if attendance.CheckinAt.IsZero() {
		utils.HttpResponse(c, 200, "", "success", gin.H{"checkin_at": nil})
		return
	}

	checkInAtResp := struct {
		CheckinAt time.Time `json:"checkin_at"`
	}{attendance.CheckinAt}

	errorCode := new(exception.Builder).
		SetStatus(exception.StatusUser).
		SetService(exception.ServiceEvent).
		SetEndpoint(exception.EndpointEventServiceCheckinQuery).
		SetType(exception.TypeCommon).
		SetOriginal(exception.CommonSuccess).
		Build(c)
	utils.HttpResponse(c, 200, errorCode, checkInAtResp)
}