package controllers

import (
	"strconv"

	"abdanhafidz.com/go-boilerplate/models/dto"
	entity "abdanhafidz.com/go-boilerplate/models/entity"
	http_error "abdanhafidz.com/go-boilerplate/models/error"
	"abdanhafidz.com/go-boilerplate/services"
	"github.com/gin-gonic/gin"
	"github.com/google/uuid"
)

type AdminEventController interface {
	ListEvents(ctx *gin.Context)
	CreateEvent(ctx *gin.Context)
	UpdateEvent(ctx *gin.Context)
	DeleteEvent(ctx *gin.Context)

	ListParticipants(ctx *gin.Context)
	ListCandidates(ctx *gin.Context)
	ListExamCandidates(ctx *gin.Context)
	AddParticipant(ctx *gin.Context)
	RemoveParticipant(ctx *gin.Context)

	ListEventExams(ctx *gin.Context)
	RemoveExam(ctx *gin.Context)

	ListResults(ctx *gin.Context)
	GetAttemptReview(ctx *gin.Context)
	UpdateResult(ctx *gin.Context)
	DeleteResult(ctx *gin.Context)
}

type adminEventController struct {
	adminEventService services.AdminEventService
}

func NewAdminEventController(adminEventService services.AdminEventService) AdminEventController {
	return &adminEventController{adminEventService: adminEventService}
}

// ListEvents godoc
// @Summary      Admin: List Events
// @Description  Admin view of all events with participant count, exam count and optional filters/pagination
// @Tags         AdminEvent
// @Accept       json
// @Produce      json
// @Security     BearerAuth
// @Param        limit   query     int     false  "Items per page"  default(10)
// @Param        page    query     int     false  "Page number"     default(1)
// @Param        search  query     string  false  "Search by title / slug / event code"
// @Param        sortBy  query     string  false  "Sort field (title, start_event, end_event, created_at, participant_count, exam_count)"
// @Param        order   query     string  false  "Sort direction (asc / desc)"
// @Param        status  query     string  false  "Filter by status (UPCOMING, ONGOING, ENDED)"
// @Success      200     {object}  dto.SuccessResponse[[]dto.AdminEventResponse]
// @Failure      400     {object}  dto.ErrorResponse
// @Failure      401     {object}  dto.ErrorResponse
// @Failure      403     {object}  dto.ErrorResponse
// @Router       /api/v1/admin/events [get]
func (c *adminEventController) ListEvents(ctx *gin.Context) {
	limit, _ := strconv.Atoi(ctx.DefaultQuery("limit", "10"))
	page, _ := strconv.Atoi(ctx.DefaultQuery("page", "1"))
	search := ctx.DefaultQuery("search", "")
	sortBy := ctx.DefaultQuery("sortBy", "")
	order := ctx.DefaultQuery("order", "")

	if limit < 1 {
		limit = 10
	} else if limit > 100 {
		limit = 100
	}
	if page < 1 {
		page = 1
	}

	var status *string
	if val := ctx.Query("status"); val != "" {
		if val == entity.EventStatusUpcoming || val == entity.EventStatusOngoing || val == entity.EventStatusEnded {
			status = &val
		}
	}

	offset := (page - 1) * limit
	p := entity.Pagination{
		Limit:  limit,
		Offset: offset,
		Search: search,
		SortBy: sortBy,
		Order:  order,
		Status: status,
	}

	list, total, err := c.adminEventService.ListEvents(ctx.Request.Context(), p)
	if err != nil {
		ResponseJSON[any, any](ctx, nil, nil, err)
		return
	}

	var totalPages int
	if total == 0 {
		totalPages = 1
	} else {
		totalPages = int((total + int64(limit) - 1) / int64(limit))
	}
	if page > totalPages {
		page = totalPages
	}

	meta := gin.H{
		"totalItems":  total,
		"totalPages":  totalPages,
		"currentPage": page,
		"limit":       limit,
	}
	ResponseJSON(ctx, meta, list, nil)
}

// GetAttemptReview godoc
// @Summary      Admin: Review Exam Attempt
// @Description  Review a specific participant attempt for an event exam
// @Tags         AdminEvent
// @Accept       json
// @Produce      json
// @Security     BearerAuth
// @Param        event_id    path      string  true  "Event ID"
// @Param        attempt_id  path      string  true  "Attempt ID"
// @Param        user_id     path      string  true  "User ID"
// @Success      200         {object}  dto.SuccessResponse[dto.AdminExamReviewResponse]
// @Failure      400         {object}  dto.ErrorResponse
// @Failure      401         {object}  dto.ErrorResponse
// @Failure      403         {object}  dto.ErrorResponse
// @Router       /api/v1/admin/events/{event_id}/attempts/{attempt_id}/{user_id}/review [get]
func (c *adminEventController) GetAttemptReview(ctx *gin.Context) {
	eventId, err := uuid.Parse(ctx.Param("event_id"))
	if err != nil {
		ResponseJSON[any](ctx, gin.H{"event_id": ctx.Param("event_id")}, nil, http_error.INVALID_TOKEN)
		return
	}
	attemptId, err := uuid.Parse(ctx.Param("attempt_id"))
	if err != nil {
		ResponseJSON[any](ctx, gin.H{"attempt_id": ctx.Param("attempt_id")}, nil, http_error.INVALID_TOKEN)
		return
	}
	userId, err := uuid.Parse(ctx.Param("user_id"))
	if err != nil {
		ResponseJSON[any](ctx, gin.H{"user_id": ctx.Param("user_id")}, nil, http_error.INVALID_TOKEN)
		return
	}

	review, reviewErr := c.adminEventService.GetAttemptReview(ctx.Request.Context(), eventId, attemptId, userId)
	ResponseJSON(ctx, gin.H{"event_id": eventId, "attempt_id": attemptId, "user_id": userId}, review, reviewErr)
}

// CreateEvent godoc
// @Summary      Admin: Create Event
// @Description  Create a new event
// @Tags         AdminEvent
// @Accept       json
// @Produce      json
// @Security     BearerAuth
// @Param        request  body      dto.CreateEventRequest  true  "Create Event Request"
// @Success      200      {object}  dto.SuccessResponse[entity.Events]
// @Failure      400      {object}  dto.ErrorResponse
// @Failure      401      {object}  dto.ErrorResponse
// @Failure      403      {object}  dto.ErrorResponse
// @Router       /api/v1/admin/events [post]
func (c *adminEventController) CreateEvent(ctx *gin.Context) {
	req := RequestJSON[dto.CreateEventRequest](ctx)
	res, err := c.adminEventService.CreateEvent(ctx.Request.Context(), req)
	ResponseJSON(ctx, req, res, err)
}

// UpdateEvent godoc
// @Summary      Admin: Update Event
// @Description  Update an existing event by ID
// @Tags         AdminEvent
// @Accept       json
// @Produce      json
// @Security     BearerAuth
// @Param        event_id  path      string                  true  "Event ID"
// @Param        request  body      dto.UpdateEventRequest  true  "Update Event Request"
// @Success      200      {object}  dto.SuccessResponse[entity.Events]
// @Failure      400      {object}  dto.ErrorResponse
// @Failure      401      {object}  dto.ErrorResponse
// @Failure      403      {object}  dto.ErrorResponse
// @Router       /api/v1/admin/events/{event_id} [put]
func (c *adminEventController) UpdateEvent(ctx *gin.Context) {
	id, err := uuid.Parse(ctx.Param("event_id"))
	if err != nil {
		ResponseJSON[any](ctx, gin.H{"event_id": ctx.Param("event_id")}, nil, http_error.INVALID_TOKEN)
		return
	}
	req := RequestJSON[dto.UpdateEventRequest](ctx)
	res, err := c.adminEventService.UpdateEvent(ctx.Request.Context(), id, req)
	ResponseJSON(ctx, req, res, err)
}

// DeleteEvent godoc
// @Summary      Admin: Delete Event
// @Description  Delete an event by ID
// @Tags         AdminEvent
// @Accept       json
// @Produce      json
// @Security     BearerAuth
// @Param        event_id  path      string  true  "Event ID"
// @Success      200 {object}  dto.SuccessResponse[map[string]bool]
// @Failure      400 {object}  dto.ErrorResponse
// @Failure      401 {object}  dto.ErrorResponse
// @Failure      403 {object}  dto.ErrorResponse
// @Router       /api/v1/admin/events/{event_id} [delete]
func (c *adminEventController) DeleteEvent(ctx *gin.Context) {
	id, err := uuid.Parse(ctx.Param("event_id"))
	if err != nil {
		ResponseJSON[any](ctx, gin.H{"event_id": ctx.Param("event_id")}, nil, http_error.INVALID_TOKEN)
		return
	}
	delErr := c.adminEventService.DeleteEvent(ctx.Request.Context(), id)
	ResponseJSON(ctx, gin.H{"id": id}, gin.H{"deleted": delErr == nil}, delErr)
}

// ListParticipants godoc
// @Summary      Admin: List Event Participants
// @Description  List all participants assigned to an event
// @Tags         AdminEvent
// @Accept       json
// @Produce      json
// @Security     BearerAuth
// @Param        event_id  path      string  true  "Event ID"
// @Param        limit     query     int     false  "Items per page"  default(10)
// @Param        page      query     int     false  "Page number"     default(1)
// @Param        search    query     string  false  "Search by username / full name"
// @Param        sortBy    query     string  false  "Sort field (assigned_at, username, email, full_name)"
// @Param        order     query     string  false  "Sort direction (asc / desc)"
// @Success      200       {object}  dto.SuccessResponse[[]entity.EventAssign]
// @Failure      400       {object}  dto.ErrorResponse
// @Failure      401       {object}  dto.ErrorResponse
// @Failure      403       {object}  dto.ErrorResponse
// @Router       /api/v1/admin/events/{event_id}/participants [get]
func (c *adminEventController) ListParticipants(ctx *gin.Context) {
	eventId, err := uuid.Parse(ctx.Param("event_id"))
	if err != nil {
		ResponseJSON[any](ctx, gin.H{"event_id": ctx.Param("event_id")}, nil, http_error.INVALID_TOKEN)
		return
	}

	limit, _ := strconv.Atoi(ctx.DefaultQuery("limit", "10"))
	page, _ := strconv.Atoi(ctx.DefaultQuery("page", "1"))
	search := ctx.DefaultQuery("search", "")
	sortBy := ctx.DefaultQuery("sortBy", "")
	order := ctx.DefaultQuery("order", "")

	if limit < 1 {
		limit = 10
	} else if limit > 100 {
		limit = 100
	}
	if page < 1 {
		page = 1
	}

	offset := (page - 1) * limit
	p := entity.Pagination{Limit: limit, Offset: offset, Search: search, SortBy: sortBy, Order: order}

	list, total, listErr := c.adminEventService.ListParticipants(ctx.Request.Context(), eventId, p)
	if listErr != nil {
		ResponseJSON[any, any](ctx, nil, nil, listErr)
		return
	}

	totalPages := int((total + int64(limit) - 1) / int64(limit))
	if total == 0 {
		totalPages = 1
	}
	if page > totalPages {
		page = totalPages
	}

	meta := gin.H{
		"event_id":    eventId,
		"totalItems":  total,
		"totalPages":  totalPages,
		"currentPage": page,
		"limit":       limit,
	}
	ResponseJSON(ctx, meta, list, nil)
}

// ListCandidates godoc
// @Summary      Admin: List of Event Candidates
// @Description  List accounts that are not yet assigned to the event
// @Tags         AdminEvent
// @Accept       json
// @Produce      json
// @Security     BearerAuth
// @Param        event_id  path      string  true   "Event ID"
// @Param        limit     query     int     false  "Items per page"  default(10)
// @Param        page      query     int     false  "Page number"     default(1)
// @Param        search    query     string  false  "Search by username / full name"
// @Param        sortBy    query     string  false  "Sort field (username, full_name, created_at)"
// @Param        orderBy   query     string  false  "Sort direction (asc / desc)"
// @Success      200       {object}  dto.SuccessResponse[[]entity.Account]
// @Failure      400       {object}  dto.ErrorResponse
// @Failure      401       {object}  dto.ErrorResponse
// @Failure      403       {object}  dto.ErrorResponse
// @Router       /api/v1/admin/events/{event_id}/candidate [get]
func (c *adminEventController) ListCandidates(ctx *gin.Context) {
	eventId, err := uuid.Parse(ctx.Param("event_id"))
	if err != nil {
		ResponseJSON[any](ctx, gin.H{"event_id": ctx.Param("event_id")}, nil, http_error.INVALID_TOKEN)
		return
	}

	limit, _ := strconv.Atoi(ctx.DefaultQuery("limit", "10"))
	page, _ := strconv.Atoi(ctx.DefaultQuery("page", "1"))
	search := ctx.DefaultQuery("search", "")
	sortBy := ctx.DefaultQuery("sortBy", "")
	order := ctx.DefaultQuery("orderBy", "")
	if order == "" {
		order = ctx.DefaultQuery("order", "")
	}

	if limit < 1 {
		limit = 10
	} else if limit > 100 {
		limit = 100
	}
	if page < 1 {
		page = 1
	}

	offset := (page - 1) * limit
	p := entity.Pagination{
		Limit:  limit,
		Offset: offset,
		Search: search,
		SortBy: sortBy,
		Order:  order,
	}

	list, total, listErr := c.adminEventService.ListCandidates(ctx.Request.Context(), eventId, p)
	if listErr != nil {
		ResponseJSON[any, any](ctx, nil, nil, listErr)
		return
	}

	totalPages := int((total + int64(limit) - 1) / int64(limit))
	if total == 0 {
		totalPages = 1
	}
	if page > totalPages {
		page = totalPages
	}

	meta := gin.H{
		"event_id":    eventId,
		"totalItems":  total,
		"totalPages":  totalPages,
		"currentPage": page,
		"limit":       limit,
	}
	ResponseJSON(ctx, meta, list, nil)
}

// ListExamCandidates godoc
// @Summary      Admin: List Exam Candidates for Event
// @Description  List exams that are not yet assigned to the event
// @Tags         AdminEvent
// @Accept       json
// @Produce      json
// @Security     BearerAuth
// @Param        event_id  path      string  true   "Event ID"
// @Param        limit     query     int     false  "Items per page"  default(10)
// @Param        page      query     int     false  "Page number"     default(1)
// @Param        search    query     string  false  "Search by exam title / slug"
// @Param        sortBy    query     string  false  "Sort field (title, slug, created_at, duration)"
// @Param        orderBy   query     string  false  "Sort direction (asc / desc)"
// @Success      200       {object}  dto.SuccessResponse[[]entity.Exam]
// @Failure      400       {object}  dto.ErrorResponse
// @Failure      401       {object}  dto.ErrorResponse
// @Failure      403       {object}  dto.ErrorResponse
// @Router       /api/v1/admin/events/{event_id}/exams/candidate [get]
func (c *adminEventController) ListExamCandidates(ctx *gin.Context) {
	eventId, err := uuid.Parse(ctx.Param("event_id"))
	if err != nil {
		ResponseJSON[any](ctx, gin.H{"event_id": ctx.Param("event_id")}, nil, http_error.INVALID_TOKEN)
		return
	}

	limit, _ := strconv.Atoi(ctx.DefaultQuery("limit", "10"))
	page, _ := strconv.Atoi(ctx.DefaultQuery("page", "1"))
	search := ctx.DefaultQuery("search", "")
	sortBy := ctx.DefaultQuery("sortBy", "")
	if sortBy == "" {
		sortBy = ctx.DefaultQuery("sortby", "")
	}
	order := ctx.DefaultQuery("orderBy", "")
	if order == "" {
		order = ctx.DefaultQuery("orderby", "")
	}
	if order == "" {
		order = ctx.DefaultQuery("order", "")
	}

	if limit < 1 {
		limit = 10
	} else if limit > 100 {
		limit = 100
	}
	if page < 1 {
		page = 1
	}

	offset := (page - 1) * limit
	p := entity.Pagination{
		Limit:  limit,
		Offset: offset,
		Search: search,
		SortBy: sortBy,
		Order:  order,
	}

	list, total, listErr := c.adminEventService.ListExamCandidates(ctx.Request.Context(), eventId, p)
	if listErr != nil {
		ResponseJSON[any, any](ctx, nil, nil, listErr)
		return
	}

	totalPages := int((total + int64(limit) - 1) / int64(limit))
	if total == 0 {
		totalPages = 1
	}
	if page > totalPages {
		page = totalPages
	}

	meta := gin.H{
		"event_id":    eventId,
		"totalItems":  total,
		"totalPages":  totalPages,
		"currentPage": page,
		"limit":       limit,
	}
	ResponseJSON(ctx, meta, list, nil)
}

// AddParticipant godoc
// @Summary      Admin: Add Participant to Event
// @Description  Manually assign a user to an event (bypasses payment)
// @Tags         AdminEvent
// @Accept       json
// @Produce      json
// @Security     BearerAuth
// @Param        event_id  path      string                     true  "Event ID"
// @Param        request   body      dto.AddParticipantRequest  true  "Add Participant Request"
// @Success      200       {object}  dto.SuccessResponse[entity.EventAssign]
// @Failure      400       {object}  dto.ErrorResponse
// @Failure      401       {object}  dto.ErrorResponse
// @Failure      403       {object}  dto.ErrorResponse
// @Router       /api/v1/admin/events/{event_id}/participants [post]
func (c *adminEventController) AddParticipant(ctx *gin.Context) {
	eventId, err := uuid.Parse(ctx.Param("event_id"))
	if err != nil {
		ResponseJSON[any](ctx, gin.H{"event_id": ctx.Param("event_id")}, nil, http_error.INVALID_TOKEN)
		return
	}
	req := RequestJSON[dto.AddParticipantRequest](ctx)
	userId, parseErr := uuid.Parse(req.UserId)
	if parseErr != nil {
		ResponseJSON[any](ctx, req, nil, http_error.INVALID_TOKEN)
		return
	}
	assign, err := c.adminEventService.AddParticipant(ctx.Request.Context(), eventId, userId)
	ResponseJSON(ctx, req, assign, err)
}

// RemoveParticipant godoc
// @Summary      Admin: Remove Participant from Event
// @Description  Unassign a user from an event
// @Tags         AdminEvent
// @Accept       json
// @Produce      json
// @Security     BearerAuth
// @Param        event_id  path      string  true  "Event ID"
// @Param        user_id   path      string  true  "User ID"
// @Success      200       {object}  dto.SuccessResponse[map[string]bool]
// @Failure      400       {object}  dto.ErrorResponse
// @Failure      401       {object}  dto.ErrorResponse
// @Failure      403       {object}  dto.ErrorResponse
// @Router       /api/v1/admin/events/{event_id}/participants/{user_id} [delete]
func (c *adminEventController) RemoveParticipant(ctx *gin.Context) {
	eventId, err := uuid.Parse(ctx.Param("event_id"))
	if err != nil {
		ResponseJSON[any](ctx, gin.H{"event_id": ctx.Param("event_id")}, nil, http_error.INVALID_TOKEN)
		return
	}
	userId, err := uuid.Parse(ctx.Param("user_id"))
	if err != nil {
		ResponseJSON[any](ctx, gin.H{"user_id": ctx.Param("user_id")}, nil, http_error.INVALID_TOKEN)
		return
	}
	delErr := c.adminEventService.RemoveParticipant(ctx.Request.Context(), eventId, userId)
	ResponseJSON(ctx, gin.H{"event_id": eventId, "user_id": userId}, gin.H{"removed": delErr == nil}, delErr)
}

// ListEventExams godoc
// @Summary      Admin: List Event Exams
// @Description  List all exams assigned to an event
// @Tags         AdminEvent
// @Accept       json
// @Produce      json
// @Security     BearerAuth
// @Param        event_id  path      string  true  "Event ID"
// @Param        limit     query     int     false  "Items per page"  default(10)
// @Param        page      query     int     false  "Page number"     default(1)
// @Param        search    query     string  false  "Search by exam title / slug"
// @Param        sortBy    query     string  false  "Sort field (title, slug, created_at, duration)"
// @Param        order     query     string  false  "Sort direction (asc / desc)"
// @Success      200       {object}  dto.SuccessResponse[[]entity.EventExamAssign]
// @Failure      400       {object}  dto.ErrorResponse
// @Failure      401       {object}  dto.ErrorResponse
// @Failure      403       {object}  dto.ErrorResponse
// @Router       /api/v1/admin/events/{event_id}/exams [get]
func (c *adminEventController) ListEventExams(ctx *gin.Context) {
	eventId, err := uuid.Parse(ctx.Param("event_id"))
	if err != nil {
		ResponseJSON[any](ctx, gin.H{"event_id": ctx.Param("event_id")}, nil, http_error.INVALID_TOKEN)
		return
	}

	limit, _ := strconv.Atoi(ctx.DefaultQuery("limit", "10"))
	page, _ := strconv.Atoi(ctx.DefaultQuery("page", "1"))
	search := ctx.DefaultQuery("search", "")
	sortBy := ctx.DefaultQuery("sortBy", "")
	order := ctx.DefaultQuery("order", "")

	if limit < 1 {
		limit = 10
	} else if limit > 100 {
		limit = 100
	}
	if page < 1 {
		page = 1
	}

	offset := (page - 1) * limit
	p := entity.Pagination{Limit: limit, Offset: offset, Search: search, SortBy: sortBy, Order: order}

	list, total, listErr := c.adminEventService.ListEventExams(ctx.Request.Context(), eventId, p)
	if listErr != nil {
		ResponseJSON[any, any](ctx, nil, nil, listErr)
		return
	}

	totalPages := int((total + int64(limit) - 1) / int64(limit))
	if total == 0 {
		totalPages = 1
	}
	if page > totalPages {
		page = totalPages
	}

	meta := gin.H{
		"event_id":    eventId,
		"totalItems":  total,
		"totalPages":  totalPages,
		"currentPage": page,
		"limit":       limit,
	}
	ResponseJSON(ctx, meta, list, nil)
}

// RemoveExam godoc
// @Summary      Admin: Remove Exam from Event
// @Description  Unassign an exam from an event
// @Tags         AdminEvent
// @Accept       json
// @Produce      json
// @Security     BearerAuth
// @Param        event_id  path      string  true  "Event ID"
// @Param        exam_id   path      string  true  "Exam ID"
// @Success      200       {object}  dto.SuccessResponse[map[string]bool]
// @Failure      400       {object}  dto.ErrorResponse
// @Failure      401       {object}  dto.ErrorResponse
// @Failure      403       {object}  dto.ErrorResponse
// @Router       /api/v1/admin/events/{event_id}/exams/{exam_id} [delete]
func (c *adminEventController) RemoveExam(ctx *gin.Context) {
	eventId, err := uuid.Parse(ctx.Param("event_id"))
	if err != nil {
		ResponseJSON[any](ctx, gin.H{"event_id": ctx.Param("event_id")}, nil, http_error.INVALID_TOKEN)
		return
	}
	examId, err := uuid.Parse(ctx.Param("exam_id"))
	if err != nil {
		ResponseJSON[any](ctx, gin.H{"exam_id": ctx.Param("exam_id")}, nil, http_error.INVALID_TOKEN)
		return
	}
	delErr := c.adminEventService.RemoveExam(ctx.Request.Context(), eventId, examId)
	ResponseJSON(ctx, gin.H{"event_id": eventId, "exam_id": examId}, gin.H{"removed": delErr == nil}, delErr)
}

// ListResults godoc
// @Summary      Admin: List Exam Results for an Event
// @Description  Retrieve all participant results for a specific exam within an event
// @Tags         AdminEvent
// @Accept       json
// @Produce      json
// @Security     BearerAuth
// @Param        event_id  path      string  true  "Event ID"
// @Param        exam_id   path      string  true  "Exam ID"
// @Param        limit     query     int     false  "Items per page"  default(10)
// @Param        page      query     int     false  "Page number"     default(1)
// @Param        search    query     string  false  "Search by username / full name"
// @Param        sortBy    query     string  false  "Sort field (final_score, created_at, username, full_name)"
// @Param        order     query     string  false  "Sort direction (asc / desc)"
// @Success      200       {object}  dto.SuccessResponse[[]entity.Result]
// @Failure      400       {object}  dto.ErrorResponse
// @Failure      401       {object}  dto.ErrorResponse
// @Failure      403       {object}  dto.ErrorResponse
// @Router       /api/v1/admin/events/{event_id}/exams/{exam_id}/results [get]
func (c *adminEventController) ListResults(ctx *gin.Context) {
	eventId, err := uuid.Parse(ctx.Param("event_id"))
	if err != nil {
		ResponseJSON[any](ctx, gin.H{"event_id": ctx.Param("event_id")}, nil, http_error.INVALID_TOKEN)
		return
	}
	examId, err := uuid.Parse(ctx.Param("exam_id"))
	if err != nil {
		ResponseJSON[any](ctx, gin.H{"exam_id": ctx.Param("exam_id")}, nil, http_error.INVALID_TOKEN)
		return
	}

	limit, _ := strconv.Atoi(ctx.DefaultQuery("limit", "10"))
	page, _ := strconv.Atoi(ctx.DefaultQuery("page", "1"))
	search := ctx.DefaultQuery("search", "")
	sortBy := ctx.DefaultQuery("sortBy", "")
	if sortBy == "" {
		sortBy = ctx.DefaultQuery("sortby", "")
	}
	order := ctx.DefaultQuery("order", "")
	if order == "" {
		order = ctx.DefaultQuery("orderBy", "")
	}
	if order == "" {
		order = ctx.DefaultQuery("orderby", "")
	}

	if limit < 1 {
		limit = 10
	} else if limit > 100 {
		limit = 100
	}
	if page < 1 {
		page = 1
	}

	offset := (page - 1) * limit
	p := entity.Pagination{Limit: limit, Offset: offset, Search: search, SortBy: sortBy, Order: order}

	list, total, listErr := c.adminEventService.ListResults(ctx.Request.Context(), eventId, examId, p)
	if listErr != nil {
		ResponseJSON[any, any](ctx, nil, nil, listErr)
		return
	}

	totalPages := int((total + int64(limit) - 1) / int64(limit))
	if total == 0 {
		totalPages = 1
	}
	if page > totalPages {
		page = totalPages
	}

	meta := gin.H{
		"event_id":    eventId,
		"exam_id":     examId,
		"totalItems":  total,
		"totalPages":  totalPages,
		"currentPage": page,
		"limit":       limit,
	}
	ResponseJSON(ctx, meta, list, nil)
}

// UpdateResult godoc
// @Summary      Admin: Update Exam Result
// @Description  Edit the final score of a participant's exam result
// @Tags         AdminEvent
// @Accept       json
// @Produce      json
// @Security     BearerAuth
// @Param        event_id   path      string                   true  "Event ID"
// @Param        exam_id    path      string                   true  "Exam ID"
// @Param        result_id  path      string                   true  "Result ID"
// @Param        request    body      dto.UpdateResultRequest  true  "Update Result Request"
// @Success      200        {object}  dto.SuccessResponse[entity.Result]
// @Failure      400        {object}  dto.ErrorResponse
// @Failure      401        {object}  dto.ErrorResponse
// @Failure      403        {object}  dto.ErrorResponse
// @Router       /api/v1/admin/events/{event_id}/exams/{exam_id}/results/{result_id} [put]
func (c *adminEventController) UpdateResult(ctx *gin.Context) {
	eventId, err := uuid.Parse(ctx.Param("event_id"))
	if err != nil {
		ResponseJSON[any](ctx, gin.H{"event_id": ctx.Param("event_id")}, nil, http_error.INVALID_TOKEN)
		return
	}
	examId, err := uuid.Parse(ctx.Param("exam_id"))
	if err != nil {
		ResponseJSON[any](ctx, gin.H{"exam_id": ctx.Param("exam_id")}, nil, http_error.INVALID_TOKEN)
		return
	}
	resultId, err := uuid.Parse(ctx.Param("result_id"))
	if err != nil {
		ResponseJSON[any](ctx, gin.H{"result_id": ctx.Param("result_id")}, nil, http_error.INVALID_TOKEN)
		return
	}
	req := RequestJSON[dto.UpdateResultRequest](ctx)
	res, err := c.adminEventService.UpdateResult(ctx.Request.Context(), eventId, examId, resultId, req)
	ResponseJSON(ctx, req, res, err)
}

// DeleteResult godoc
// @Summary      Admin: Delete Exam Result
// @Description  Delete a participant's exam result
// @Tags         AdminEvent
// @Accept       json
// @Produce      json
// @Security     BearerAuth
// @Param        event_id   path      string  true  "Event ID"
// @Param        exam_id    path      string  true  "Exam ID"
// @Param        result_id  path      string  true  "Result ID"
// @Success      200        {object}  dto.SuccessResponse[map[string]bool]
// @Failure      400        {object}  dto.ErrorResponse
// @Failure      401        {object}  dto.ErrorResponse
// @Failure      403        {object}  dto.ErrorResponse
// @Router       /api/v1/admin/events/{event_id}/exams/{exam_id}/results/{result_id} [delete]
func (c *adminEventController) DeleteResult(ctx *gin.Context) {
	eventId, err := uuid.Parse(ctx.Param("event_id"))
	if err != nil {
		ResponseJSON[any](ctx, gin.H{"event_id": ctx.Param("event_id")}, nil, http_error.INVALID_TOKEN)
		return
	}
	examId, err := uuid.Parse(ctx.Param("exam_id"))
	if err != nil {
		ResponseJSON[any](ctx, gin.H{"exam_id": ctx.Param("exam_id")}, nil, http_error.INVALID_TOKEN)
		return
	}
	resultId, err := uuid.Parse(ctx.Param("result_id"))
	if err != nil {
		ResponseJSON[any](ctx, gin.H{"result_id": ctx.Param("result_id")}, nil, http_error.INVALID_TOKEN)
		return
	}
	delErr := c.adminEventService.DeleteResult(ctx.Request.Context(), eventId, examId, resultId)
	ResponseJSON(ctx, gin.H{"result_id": resultId}, gin.H{"deleted": delErr == nil}, delErr)
}