// agent_cli_api.go - Agent CLI 会话历史 REST 接口 // Logan.Li
// 供前端展示历史任务列表与回放某次任务的完整推理过程。
package controller

import (
	"net/http"
	"strconv"

	"github.com/gin-gonic/gin"

	"ezops/middleware"
	"ezops/model"
	"ezops/pkg/agentcli"
)

// ListSessions 会话列表（按当前用户隔离） // Logan.Li
// GET /api/v1/aiops/agent-cli/sessions?mode=&server_id=&cluster_id=&namespace=&page=&page_size=
func (h *AgentCLIHandler) ListSessions(c *gin.Context) {
	uid := middleware.GetUserID(c)
	page, _ := strconv.Atoi(c.DefaultQuery("page", "1"))
	if page < 1 {
		page = 1
	}
	pageSize, _ := strconv.Atoi(c.DefaultQuery("page_size", "20"))
	if pageSize <= 0 || pageSize > 100 {
		pageSize = 20
	}

	q := h.db.Model(&model.AgentCLISession{}).Where("user_id = ?", uid)
	if mode := c.Query("mode"); mode != "" {
		mode = agentcli.NormalizeRunMode(mode)
		if mode == agentcli.RunModeKubernetes {
			q = q.Where("mode IN ?", []string{agentcli.RunModeKubernetes, "k8s"})
		} else {
			q = q.Where("mode = ?", mode)
		}
	}
	if sid := c.Query("server_id"); sid != "" {
		q = q.Where("server_id = ?", sid)
	}
	if cid := c.Query("cluster_id"); cid != "" {
		q = q.Where("cluster_id = ?", cid)
	}
	if ns := c.Query("namespace"); ns != "" {
		q = q.Where("namespace = ?", ns)
	}

	var total int64
	q.Count(&total)
	var sessions []model.AgentCLISession
	if err := q.Order("created_at DESC").Offset((page - 1) * pageSize).Limit(pageSize).Find(&sessions).Error; err != nil {
		c.JSON(http.StatusOK, model.Response{Code: 500, Message: "查询失败: " + err.Error()})
		return
	}
	c.JSON(http.StatusOK, model.Response{Code: 200, Data: gin.H{"list": sessions, "total": total}})
}

// GetSession 会话详情（含完整推理消息，供回放） // Logan.Li
// GET /api/v1/aiops/agent-cli/sessions/:id
func (h *AgentCLIHandler) GetSession(c *gin.Context) {
	uid := middleware.GetUserID(c)
	id := c.Param("id")
	var sess model.AgentCLISession
	if err := h.db.Where("user_id = ?", uid).First(&sess, id).Error; err != nil {
		c.JSON(http.StatusOK, model.Response{Code: 404, Message: "会话不存在"})
		return
	}
	var msgs []model.AgentCLIMessage
	h.db.Where("session_id = ?", id).Order("id ASC").Find(&msgs)
	c.JSON(http.StatusOK, model.Response{Code: 200, Data: gin.H{"session": sess, "messages": msgs}})
}

// DeleteSession 删除会话及其消息 // Logan.Li
// DELETE /api/v1/aiops/agent-cli/sessions/:id
func (h *AgentCLIHandler) DeleteSession(c *gin.Context) {
	uid := middleware.GetUserID(c)
	id := c.Param("id")
	var sess model.AgentCLISession
	if err := h.db.Where("user_id = ?", uid).First(&sess, id).Error; err != nil {
		c.JSON(http.StatusOK, model.Response{Code: 404, Message: "会话不存在"})
		return
	}
	if err := h.db.Where("session_id = ?", id).Delete(&model.AgentCLIMessage{}).Error; err != nil {
		c.JSON(http.StatusOK, model.Response{Code: 500, Message: "删除消息失败: " + err.Error()})
		return
	}
	if err := h.db.Delete(&model.AgentCLISession{}, id).Error; err != nil {
		c.JSON(http.StatusOK, model.Response{Code: 500, Message: "删除会话失败: " + err.Error()})
		return
	}
	c.JSON(http.StatusOK, model.Response{Code: 200, Message: "已删除"})
}