package handler

import (
	"net/http"
	"strconv"

	"github.com/company/ai-ops/internal/service"
	"github.com/company/ai-ops/pkg/errors"
	"github.com/company/ai-ops/pkg/response"
)

// AuditHandler 是审计日志 HTTP 处理器
type AuditHandler struct {
	service *service.AuditService
}

func NewAuditHandler(s *service.AuditService) *AuditHandler {
	return &AuditHandler{service: s}
}

func (h *AuditHandler) RegisterRoutes(mux *http.ServeMux) {
	mux.HandleFunc("GET /api/v1/ai-ops/audits", h.ListAudits)
	mux.HandleFunc("POST /api/v1/ai-ops/audits/{id}/rollback", h.Rollback)
}

func (h *AuditHandler) ListAudits(w http.ResponseWriter, r *http.Request) {
	query := r.URL.Query()
	objectType := query.Get("object_type")
	objectID := query.Get("object_id")
	page, _ := strconv.Atoi(query.Get("page"))
	pageSize, _ := strconv.Atoi(query.Get("page_size"))
	if page < 1 {
		page = 1
	}
	if pageSize < 1 || pageSize > 100 {
		pageSize = 20
	}

	logs, total, err := h.service.List(r.Context(), objectType, objectID, page, pageSize)
	if err != nil {
		response.Error(w, errors.Wrap(err, errors.ErrInternal))
		return
	}
	response.Success(w, map[string]any{"items": logs, "total": total, "page": page, "page_size": pageSize})
}

func (h *AuditHandler) Rollback(w http.ResponseWriter, r *http.Request) {
	id := r.PathValue("id")
	log, err := h.service.Rollback(r.Context(), id)
	if err != nil {
		response.Error(w, errors.Wrap(err, errors.ErrBadRequest).WithDetail(map[string]any{"error": err.Error()}))
		return
	}
	response.Success(w, log)
}