Refactor API routes and controllers for improved structure and clarity

- Updated API route structure to remove versioning and consolidate endpoints.
- Refactored routing in `server.go` to use a unified `/api` prefix for all controllers.
- Added new `ChannelController`, `ConversationController`, and `MessageController` to handle specific API functionalities.
- Removed deprecated `OpenImContextMiddleware` and related logic.
- Enhanced channel validation logic in `ChannelService` and `ChannelRepository`.
- Updated frontend API calls to align with new endpoint structure.

internal/controllers/api/conversation_controller.go

@@ -0,0 +1,77 @@
+package api
+
+import (
+	"cs-agent/internal/builders"
+	"cs-agent/internal/pkg/dto/request"
+	"cs-agent/internal/pkg/dto/response"
+	"cs-agent/internal/pkg/irisx"
+	"cs-agent/internal/services"
+
+	"github.com/kataras/iris/v12"
+	"github.com/mlogclub/simple/web"
+	"github.com/mlogclub/simple/web/params"
+)
+
+type ConversationController struct {
+	Ctx iris.Context
+}
+
+func (c *ConversationController) GetBy(id int64) *web.JsonResult {
+	if services.ChannelService.GetEnabledChannel(c.Ctx) == nil {
+		return web.JsonErrorMsg("接入渠道未初始化")
+	}
+	external := irisx.GetExternalInfo(c.Ctx)
+	if external == nil {
+		return web.JsonErrorMsg("外部身份未初始化")
+	}
+
+	item := services.ConversationService.Get(id)
+	if item == nil {
+		return web.JsonErrorMsg("会话不存在")
+	}
+	if !services.ConversationService.IsCustomerConversationOwner(item, *external) {
+		return web.JsonErrorMsg("无权访问该会话")
+	}
+
+	detail := response.ConversationDetailResponse{
+		ConversationResponse: builders.BuildConversation(item),
+		Participants:         builders.BuildParticipantResponses(id),
+	}
+	return web.JsonData(detail)
+}
+
+func (c *ConversationController) PostCreate_or_match() *web.JsonResult {
+	channel := services.ChannelService.GetEnabledChannel(c.Ctx)
+	if channel == nil {
+		return web.JsonErrorMsg("接入渠道未初始化")
+	}
+	external := irisx.GetExternalInfo(c.Ctx)
+	if external == nil {
+		return web.JsonErrorMsg("外部身份未初始化")
+	}
+
+	item, err := services.ConversationService.Create(*external, channel.AIAgentID)
+	if err != nil {
+		return web.JsonError(err)
+	}
+	return web.JsonData(builders.BuildConversation(item))
+}
+
+func (c *ConversationController) PostClose() *web.JsonResult {
+	if services.ChannelService.GetEnabledChannel(c.Ctx) == nil {
+		return web.JsonErrorMsg("接入渠道未初始化")
+	}
+	external := irisx.GetExternalInfo(c.Ctx)
+	if external == nil {
+		return web.JsonErrorMsg("外部身份未初始化")
+	}
+
+	req := request.CloseConversationRequest{}
+	if err := params.ReadJSON(c.Ctx, &req); err != nil {
+		return web.JsonError(err)
+	}
+	if err := services.ConversationService.CloseCustomerConversation(req.ConversationID, *external); err != nil {
+		return web.JsonError(err)
+	}
+	return web.JsonSuccess()
+}