package v1

import (
	"net/http"

	"github.com/gin-gonic/gin"

	"github.com/gochat/gochat/internal/service"
	"github.com/gochat/gochat/pkg/response"
)

// InboxLimitHandler handles inbox limit CRUD endpoints.
// Reference: Chatwoot app/controllers/api/v1/accounts/inboxes/inbox_limits_controller.rb
// Inbox limits only have create, update, and destroy actions (no index or show).
type InboxLimitHandler struct {
	svc *service.InboxLimitService
}

// NewInboxLimitHandler creates a new InboxLimitHandler.
func NewInboxLimitHandler(svc *service.InboxLimitService) *InboxLimitHandler {
	return &InboxLimitHandler{svc: svc}
}

// Create creates a new inbox limit.
// POST /api/v1/accounts/:account_id/inboxes/:inbox_id/inbox_limits
// Body: { "type": "conversation_count", "value": 100 }
func (h *InboxLimitHandler) Create(c *gin.Context) {
	inboxID, err := parseUintParam(c, "inbox_id")
	if err != nil {
		response.AbortWithStatusError(c, http.StatusBadRequest, response.ErrBadRequest, "invalid inbox_id")
		return
	}

	var req service.CreateInboxLimitRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		response.AbortWithStatusError(c, http.StatusBadRequest, response.ErrBadRequest, "invalid request body")
		return
	}

	limit, svcErr := h.svc.Create(c.Request.Context(), inboxID, req)
	if svcErr != nil {
		handleServiceError(c, svcErr)
		return
	}

	response.OK(c, limit)
}

// Update modifies an existing inbox limit.
// PATCH /api/v1/accounts/:account_id/inboxes/:inbox_id/inbox_limits/:id
// Body: { "type": "conversation_count", "value": 200 }
func (h *InboxLimitHandler) Update(c *gin.Context) {
	id, err := parseUintParam(c, "id")
	if err != nil {
		response.AbortWithStatusError(c, http.StatusBadRequest, response.ErrBadRequest, "invalid id")
		return
	}

	var req service.UpdateInboxLimitRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		response.AbortWithStatusError(c, http.StatusBadRequest, response.ErrBadRequest, "invalid request body")
		return
	}

	limit, svcErr := h.svc.Update(c.Request.Context(), id, req)
	if svcErr != nil {
		handleServiceError(c, svcErr)
		return
	}

	response.OK(c, limit)
}

// Delete removes an inbox limit.
// DELETE /api/v1/accounts/:account_id/inboxes/:inbox_id/inbox_limits/:id
func (h *InboxLimitHandler) Delete(c *gin.Context) {
	id, err := parseUintParam(c, "id")
	if err != nil {
		response.AbortWithStatusError(c, http.StatusBadRequest, response.ErrBadRequest, "invalid id")
		return
	}

	if svcErr := h.svc.Delete(c.Request.Context(), id); svcErr != nil {
		handleServiceError(c, svcErr)
		return
	}

	response.OK(c, gin.H{})
}