package controllers

import (
	"strconv"
	"time"

	"github.com/gin-gonic/gin"

	"lokistack/models"
	"lokistack/services"
	"lokistack/utils"
)

// AuditController 审计日志查询（仅管理员）
type AuditController struct{}

func NewAuditController() *AuditController { return &AuditController{} }

// List 分页查询审计日志
// GET /api/v1/audit-logs?page=1&pageSize=20&username=&module=&action=&status=0&startTime=&endTime=
func (ctrl *AuditController) List(c *gin.Context) {
	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
	pageSize, _ := strconv.Atoi(c.DefaultQuery("pageSize", "20"))
	if pageSize <= 0 || pageSize > 200 {
		pageSize = 20
	}
	status, _ := strconv.Atoi(c.DefaultQuery("status", "0"))

	q := models.AuditQuery{
		Username:   c.Query("username"),
		Module:     c.Query("module"),
		Action:     c.Query("action"),
		ResourceID: c.Query("resourceId"),
		Status:     status,
		Page:       page,
		PageSize:   pageSize,
	}
	if v := c.Query("startTime"); v != "" {
		if t, err := time.Parse(time.RFC3339, v); err == nil {
			q.StartTime = &t
		}
	}
	if v := c.Query("endTime"); v != "" {
		if t, err := time.Parse(time.RFC3339, v); err == nil {
			q.EndTime = &t
		}
	}

	list, total := services.ListAuditLogs(q)
	utils.Success(c, gin.H{"list": list, "total": total, "page": page, "pageSize": pageSize})
}

// Get 审计详情（含 Before/After 完整内容）
func (ctrl *AuditController) Get(c *gin.Context) {
	id, err := utils.IntParam(c, "id")
	if err != nil {
		utils.BadRequest(c, "ID 无效")
		return
	}
	entry, err := services.GetAuditLog(uint(id))
	if err != nil {
		utils.NotFound(c, err.Error())
		return
	}
	utils.Success(c, entry)
}

// Stats 统计卡片
func (ctrl *AuditController) Stats(c *gin.Context) {
	utils.Success(c, services.AuditStatistics())
}