package org

import (
	"errors"
	"log"
	"net/http"

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

type Handler struct {
	service *Service
}

func NewHandler(service *Service) *Handler {
	return &Handler{service: service}
}

// @Summary      Create organization
// @Description  Create a new organization
// @Tags         organizations
// @Accept       json
// @Produce      json
// @Security     Bearer
// @Param        request  body  CreateOrgRequest  true  "Organization details"
// @Success      201  {object}  OrgResponse
// @Failure      400  {object}  ErrorResponse
// @Failure      409  {object}  ErrorResponse
// @Router       /api/organizations [post]
func (h *Handler) Create(c *gin.Context) {
	var req CreateOrgRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, ErrorResponse{Error: err.Error()})
		return
	}

	org, err := h.service.Create(c.Request.Context(), req)
	if err != nil {
		if errors.Is(err, ErrSlugExists) {
			c.JSON(http.StatusConflict, ErrorResponse{Error: err.Error()})
			return
		}
		log.Printf("create org error: %v", err)
		c.JSON(http.StatusInternalServerError, ErrorResponse{Error: "internal server error"})
		return
	}

	c.JSON(http.StatusCreated, OrgResponse{Organization: *org})
}

// @Summary      Get organization by ID
// @Description  Get organization details
// @Tags         organizations
// @Accept       json
// @Produce      json
// @Security     Bearer
// @Param        id   path      string  true  "Organization ID"
// @Success      200  {object}  OrgResponse
// @Failure      404  {object}  ErrorResponse
// @Router       /api/organizations/{id} [get]
func (h *Handler) GetByID(c *gin.Context) {
	id := c.Param("id")

	org, err := h.service.GetByID(c.Request.Context(), id)
	if err != nil {
		if errors.Is(err, ErrNotFound) {
			c.JSON(http.StatusNotFound, ErrorResponse{Error: err.Error()})
			return
		}
		log.Printf("get org error: %v", err)
		c.JSON(http.StatusInternalServerError, ErrorResponse{Error: "internal server error"})
		return
	}

	c.JSON(http.StatusOK, OrgResponse{Organization: *org})
}

// @Summary      List organizations
// @Description  Get all organizations
// @Tags         organizations
// @Accept       json
// @Produce      json
// @Security     Bearer
// @Success      200  {object}  OrgListResponse
// @Failure      500  {object}  ErrorResponse
// @Router       /api/organizations [get]
func (h *Handler) List(c *gin.Context) {
	resp, err := h.service.List(c.Request.Context())
	if err != nil {
		log.Printf("list orgs error: %v", err)
		c.JSON(http.StatusInternalServerError, ErrorResponse{Error: "internal server error"})
		return
	}

	c.JSON(http.StatusOK, resp)
}

// @Summary      Update organization
// @Description  Update organization name
// @Tags         organizations
// @Accept       json
// @Produce      json
// @Security     Bearer
// @Param        id       path    string            true  "Organization ID"
// @Param        request  body    UpdateOrgRequest  true  "New organization details"
// @Success      200      {object}  OrgResponse
// @Failure      400      {object}  ErrorResponse
// @Failure      404      {object}  ErrorResponse
// @Router       /api/organizations/{id} [put]
func (h *Handler) Update(c *gin.Context) {
	id := c.Param("id")

	var req UpdateOrgRequest
	if err := c.ShouldBindJSON(&req); err != nil {
		c.JSON(http.StatusBadRequest, ErrorResponse{Error: err.Error()})
		return
	}

	org, err := h.service.Update(c.Request.Context(), id, req)
	if err != nil {
		if errors.Is(err, ErrNotFound) {
			c.JSON(http.StatusNotFound, ErrorResponse{Error: err.Error()})
			return
		}
		log.Printf("update org error: %v", err)
		c.JSON(http.StatusInternalServerError, ErrorResponse{Error: "internal server error"})
		return
	}

	c.JSON(http.StatusOK, OrgResponse{Organization: *org})
}

// @Summary      Delete organization
// @Description  Delete an organization
// @Tags         organizations
// @Accept       json
// @Produce      json
// @Security     Bearer
// @Param        id   path      string  true  "Organization ID"
// @Success      200  {object}  map[string]string
// @Failure      404  {object}  ErrorResponse
// @Router       /api/organizations/{id} [delete]
func (h *Handler) Delete(c *gin.Context) {
	id := c.Param("id")

	if err := h.service.Delete(c.Request.Context(), id); err != nil {
		if errors.Is(err, ErrNotFound) {
			c.JSON(http.StatusNotFound, ErrorResponse{Error: err.Error()})
			return
		}
		log.Printf("delete org error: %v", err)
		c.JSON(http.StatusInternalServerError, ErrorResponse{Error: "internal server error"})
		return
	}

	c.JSON(http.StatusOK, gin.H{"message": "organization deleted"})
}