package v1

import (
	"net/http"

	"github.com/gin-gonic/gin"
	"github.com/gochat/gochat/internal/service"
	applogger "github.com/gochat/gochat/pkg/logger"
	"github.com/gochat/gochat/pkg/response"
)

// CaptainPreferenceHandler handles CaptainPreference REST API endpoints.
// Reference: Chatwoot enterprise/app/controllers/api/v1/captain/preferences_controller.rb
type CaptainPreferenceHandler struct {
	svc *service.CaptainPreferenceService
}

func NewCaptainPreferenceHandler(svc *service.CaptainPreferenceService) *CaptainPreferenceHandler {
	return &CaptainPreferenceHandler{svc: svc}
}

// Create creates a new captain preference for an account.
// POST /api/v1/accounts/:id/captain/preferences
func (h *CaptainPreferenceHandler) Create(c *gin.Context) {
	accountID := parseAccountIDParam(c)
	if accountID == 0 {
		response.AbortWithStatusError(c, http.StatusBadRequest, response.ErrBadRequest, "invalid account_id")
		return
	}

	var req service.CreatePreferenceRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		response.AbortWithStatusError(c, http.StatusBadRequest, response.ErrValidation, err.Error())
		return
	}

	pref, err := h.svc.Create(c.Request.Context(), accountID, &req)
	if err != nil {
		applogger.L().Errorf("Create captain preference: %v", err)
		response.AbortWithStatusError(c, http.StatusInternalServerError, response.ErrInternal, "failed to create preference")
		return
	}

	response.OK(c, pref)
}

// Get retrieves the captain preference for an account.
// GET /api/v1/accounts/:id/captain/preferences
func (h *CaptainPreferenceHandler) Get(c *gin.Context) {
	accountID := parseAccountIDParam(c)
	if accountID == 0 {
		response.AbortWithStatusError(c, http.StatusBadRequest, response.ErrBadRequest, "invalid account_id")
		return
	}

	pref, err := h.svc.GetConfig(c.Request.Context(), accountID)
	if err != nil {
		applogger.L().Errorf("Get captain preference: %v", err)
		response.AbortWithStatusError(c, http.StatusNotFound, response.ErrNotFound, "preference not found")
		return
	}

	c.JSON(http.StatusOK, pref)
}

// Update updates the captain preference for an account.
// PUT /api/v1/accounts/:id/captain/preferences
func (h *CaptainPreferenceHandler) Update(c *gin.Context) {
	accountID := parseAccountIDParam(c)
	if accountID == 0 {
		response.AbortWithStatusError(c, http.StatusBadRequest, response.ErrBadRequest, "invalid account_id")
		return
	}
	if !captainPreferencesCanUpdate(c) {
		response.AbortWithStatusError(c, http.StatusUnauthorized, response.ErrUnauthorized, "administrator role required")
		return
	}

	var req service.UpdateCaptainConfigRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		response.AbortWithStatusError(c, http.StatusBadRequest, response.ErrValidation, err.Error())
		return
	}

	pref, err := h.svc.UpdateConfig(c.Request.Context(), accountID, &req)
	if err != nil {
		applogger.L().Errorf("Update captain preference: %v", err)
		c.JSON(http.StatusUnprocessableEntity, gin.H{"error": err.Error()})
		return
	}

	c.JSON(http.StatusOK, pref)
}

// Delete removes the captain preference for an account.
// DELETE /api/v1/accounts/:id/captain/preferences
func (h *CaptainPreferenceHandler) Delete(c *gin.Context) {
	accountID := parseAccountIDParam(c)
	if accountID == 0 {
		response.AbortWithStatusError(c, http.StatusBadRequest, response.ErrBadRequest, "invalid account_id")
		return
	}

	if err := h.svc.Delete(c.Request.Context(), accountID); err != nil {
		applogger.L().Errorf("Delete captain preference: %v", err)
		response.AbortWithStatusError(c, http.StatusInternalServerError, response.ErrInternal, "failed to delete preference")
		return
	}

	response.OK(c, gin.H{"message": "preference deleted"})
}

func captainPreferencesCanUpdate(c *gin.Context) bool {
	role := getRole(c)
	return role == "administrator" || role == "super_admin"
}