package adminhandler

import (
	"net/http"
	"strconv"

	"github.com/gin-gonic/gin"

	"spark-server/internal/module/client/entity"
	clientlogic "spark-server/internal/module/client/logic"
)

// ClientHandler serves popadmin legal / subscription / feedback ops.
type ClientHandler struct {
	svc *clientlogic.Service
}

func NewClient(svc *clientlogic.Service) *ClientHandler {
	return &ClientHandler{svc: svc}
}

func (h *ClientHandler) ready(c *gin.Context) bool {
	if h == nil || h.svc == nil || !h.svc.Ready() {
		Fail(c, http.StatusServiceUnavailable, "client 服务未就绪")
		return false
	}
	return true
}

func (h *ClientHandler) GetLegal(c *gin.Context) {
	if !h.ready(c) {
		return
	}
	out, err := h.svc.LegalAgreements(c.Request.Context())
	if err != nil {
		Fail(c, http.StatusInternalServerError, err.Error())
		return
	}
	OK(c, out)
}

func (h *ClientHandler) PutLegal(c *gin.Context) {
	if !h.ready(c) {
		return
	}
	var body entity.LegalDocument
	if err := c.ShouldBindJSON(&body); err != nil {
		Fail(c, http.StatusBadRequest, "无效 JSON")
		return
	}
	if err := h.svc.UpsertLegalAdmin(c.Request.Context(), &body); err != nil {
		Fail(c, http.StatusBadRequest, err.Error())
		return
	}
	OKMsg(c, "已保存", body)
}

func (h *ClientHandler) ListPlans(c *gin.Context) {
	if !h.ready(c) {
		return
	}
	lang := c.Query("lang")
	list, err := h.svc.ListPlansAdmin(c.Request.Context(), lang)
	if err != nil {
		Fail(c, http.StatusInternalServerError, err.Error())
		return
	}
	OK(c, gin.H{"items": list})
}

func (h *ClientHandler) PutPlan(c *gin.Context) {
	if !h.ready(c) {
		return
	}
	var body entity.SubscriptionPlan
	if err := c.ShouldBindJSON(&body); err != nil {
		Fail(c, http.StatusBadRequest, "无效 JSON")
		return
	}
	if err := h.svc.UpsertPlanAdmin(c.Request.Context(), &body); err != nil {
		Fail(c, http.StatusBadRequest, err.Error())
		return
	}
	OKMsg(c, "已保存", body)
}

func (h *ClientHandler) ListFeedback(c *gin.Context) {
	if !h.ready(c) {
		return
	}
	page, _ := strconv.Atoi(c.DefaultQuery("page", "0"))
	size, _ := strconv.Atoi(c.DefaultQuery("size", "50"))
	list, total, err := h.svc.ListFeedbackAdmin(c.Request.Context(), page, size)
	if err != nil {
		Fail(c, http.StatusInternalServerError, err.Error())
		return
	}
	OK(c, gin.H{"list": list, "total": total, "page": page, "size": size})
}

func (h *ClientHandler) PatchFeedback(c *gin.Context) {
	if !h.ready(c) {
		return
	}
	id, err := strconv.ParseInt(c.Param("id"), 10, 64)
	if err != nil || id <= 0 {
		Fail(c, http.StatusBadRequest, "无效 id")
		return
	}
	var body struct {
		Status string `json:"status"`
	}
	if err := c.ShouldBindJSON(&body); err != nil || body.Status == "" {
		Fail(c, http.StatusBadRequest, "status 必填")
		return
	}
	if err := h.svc.UpdateFeedbackStatus(c.Request.Context(), id, body.Status); err != nil {
		Fail(c, http.StatusBadRequest, err.Error())
		return
	}
	OKMsg(c, "已更新", gin.H{"id": id, "status": body.Status})
}