feat(eventbus): implement conversation and ticket assignment event handlers with notifications

internal/services/event_handlers/ticket_assigned_event_handler.go

@@ -0,0 +1,50 @@
+package event_handlers
+
+import (
+	"context"
+	"cs-agent/internal/events"
+	"cs-agent/internal/models"
+	"cs-agent/internal/pkg/enums"
+	"cs-agent/internal/pkg/eventbus"
+	"cs-agent/internal/services"
+	"fmt"
+	"strings"
+	"time"
+
+	"github.com/mlogclub/simple/common/strs"
+)
+
+func init() {
+	eventbus.
+		Register[events.TicketAssignedEvent]().
+		Subscribe(handleTicketAssignedNotify)
+}
+
+func handleTicketAssignedNotify(ctx context.Context, event events.TicketAssignedEvent) error {
+	if event.TicketID <= 0 || event.ToUserID <= 0 {
+		return nil
+	}
+	ticket := services.TicketService.Get(event.TicketID)
+	if ticket == nil {
+		return nil
+	}
+	content := buildTicketAssignedNotifyBody(ticket, event.ToUserID, event.Reason)
+	return services.WxWorkNotifyService.SendTextToAssigneeOrDefault(event.ToUserID, "工单指派提醒", content)
+}
+
+func buildTicketAssignedNotifyBody(ticket *models.Ticket, assigneeID int64, reason string) string {
+	if ticket == nil {
+		return ""
+	}
+	lines := []string{
+		fmt.Sprintf("工单号: %s", strs.DefaultIfBlank(ticket.TicketNo, fmt.Sprintf("#%d", ticket.ID))),
+		fmt.Sprintf("工单标题: %s", strs.DefaultIfBlank(ticket.Title, "-")),
+		fmt.Sprintf("当前状态: %s", enums.GetTicketStatusLabel(ticket.Status)),
+		fmt.Sprintf("处理人: %s", resolveNotifyUserLabel(assigneeID)),
+	}
+	if strings.TrimSpace(reason) != "" {
+		lines = append(lines, fmt.Sprintf("指派原因: %s", strings.TrimSpace(reason)))
+	}
+	lines = append(lines, fmt.Sprintf("时间: %s", time.Now().Format("2006-01-02 15:04:05")))
+	return strings.Join(lines, "\n")
+}