package handler

import (
	"net/http"

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

	"github.com/yuxingu/digital-psychology/apps/api/internal/middleware"
	"github.com/yuxingu/digital-psychology/apps/api/internal/service/report"
	"github.com/yuxingu/digital-psychology/apps/api/pkg/response"
)

// ReportHandler exposes portrait reports and commerce mock.
type ReportHandler struct {
	Svc *report.Service
}

// Register mounts report/commerce routes.
func (h *ReportHandler) Register(rg *gin.RouterGroup) {
	rg.POST("/reports/portrait", h.CreatePortrait)
	rg.GET("/reports/:id", h.Get)
	rg.POST("/orders", h.CreateOrder)
	rg.POST("/orders/:id/pay-mock", h.PayMock)
}

// CreatePortrait handles POST /reports/portrait.
func (h *ReportHandler) CreatePortrait(c *gin.Context) {
	userID, ok := middleware.UserIDFromContext(c)
	if !ok {
		response.Fail(c, http.StatusUnauthorized, 40100, "unauthorized")
		return
	}
	var req struct {
		ProfileID string `json:"profile_id" binding:"required"`
	}
	if err := c.ShouldBindJSON(&req); err != nil {
		response.Fail(c, http.StatusBadRequest, 10000, "invalid request")
		return
	}
	pid, err := uuid.Parse(req.ProfileID)
	if err != nil {
		response.Fail(c, http.StatusBadRequest, 10000, "invalid profile_id")
		return
	}
	rep, err := h.Svc.CreatePortrait(c.Request.Context(), userID, pid)
	if err != nil {
		response.Fail(c, http.StatusBadRequest, 30002, err.Error())
		return
	}
	response.OK(c, rep)
}

// Get handles GET /reports/:id.
func (h *ReportHandler) Get(c *gin.Context) {
	userID, ok := middleware.UserIDFromContext(c)
	if !ok {
		response.Fail(c, http.StatusUnauthorized, 40100, "unauthorized")
		return
	}
	rid, err := uuid.Parse(c.Param("id"))
	if err != nil {
		response.Fail(c, http.StatusBadRequest, 10000, "invalid id")
		return
	}
	rep, err := h.Svc.Get(c.Request.Context(), userID, rid)
	if err != nil {
		response.Fail(c, http.StatusNotFound, 40401, err.Error())
		return
	}
	response.OK(c, rep)
}

// CreateOrder handles POST /orders.
func (h *ReportHandler) CreateOrder(c *gin.Context) {
	userID, ok := middleware.UserIDFromContext(c)
	if !ok {
		response.Fail(c, http.StatusUnauthorized, 40100, "unauthorized")
		return
	}
	var req struct {
		Kind     string  `json:"kind" binding:"required"`
		Plan     string  `json:"plan"`
		ReportID *string `json:"report_id"`
	}
	if err := c.ShouldBindJSON(&req); err != nil {
		response.Fail(c, http.StatusBadRequest, 10000, "invalid request")
		return
	}
	var rid *uuid.UUID
	if req.ReportID != nil && *req.ReportID != "" {
		id, err := uuid.Parse(*req.ReportID)
		if err != nil {
			response.Fail(c, http.StatusBadRequest, 10000, "invalid report_id")
			return
		}
		rid = &id
	}
	oid, err := h.Svc.CreateOrder(c.Request.Context(), userID, report.CreateOrderInput{
		Kind: req.Kind, Plan: req.Plan, ReportID: rid,
	})
	if err != nil {
		response.Fail(c, http.StatusBadRequest, 30003, err.Error())
		return
	}
	response.OK(c, gin.H{"order_id": oid.String()})
}

// PayMock handles POST /orders/:id/pay-mock.
func (h *ReportHandler) PayMock(c *gin.Context) {
	userID, ok := middleware.UserIDFromContext(c)
	if !ok {
		response.Fail(c, http.StatusUnauthorized, 40100, "unauthorized")
		return
	}
	oid, err := uuid.Parse(c.Param("id"))
	if err != nil {
		response.Fail(c, http.StatusBadRequest, 10000, "invalid id")
		return
	}
	if err := h.Svc.PayMock(c.Request.Context(), userID, oid); err != nil {
		response.Fail(c, http.StatusBadRequest, 30004, err.Error())
		return
	}
	response.OK(c, gin.H{"paid": true})
}