package api

import (
	"log/slog"

	"code.tczkiot.com/wlw/ai-agent/internal/builders"
	"code.tczkiot.com/wlw/ai-agent/internal/pkg/dto/request"
	"code.tczkiot.com/wlw/ai-agent/internal/pkg/dto/response"
	"code.tczkiot.com/wlw/ai-agent/internal/pkg/httpx"
	"code.tczkiot.com/wlw/ai-agent/internal/pkg/i18nx"
	"code.tczkiot.com/wlw/ai-agent/internal/services"

	"code.tczkiot.com/wlw/ai-agent/internal/pkg/httpx/params"

	"github.com/gin-gonic/gin"
)

func ConversationGetQuick_actions(ctx *gin.Context) {
	if services.ChannelService.GetEnabledChannel(ctx) == nil {
		httpx.WriteJSON(ctx, httpx.JsonErrorMsg(ctx, "error.e0211"))
		return
	}
	external := httpx.GetExternalUser(ctx)
	if external == nil {
		httpx.WriteJSON(ctx, httpx.JsonErrorMsg(ctx, "error.e0150"))
		return
	}
	conversationID, _ := params.GetInt64(ctx, "conversation_id")
	conversation := services.ConversationService.Get(conversationID)
	if conversation == nil {
		httpx.WriteJSON(ctx, httpx.JsonErrorMsg(ctx, "error.e0116"))
		return
	}
	if !services.ConversationService.IsCustomerConversationOwner(conversation, *external) {
		httpx.WriteJSON(ctx, httpx.JsonErrorMsg(ctx, "error.e0222"))
		return
	}
	actions, err := services.CustomerQuickActionService.ListForConversation(ctx, conversation)
	if err != nil {
		httpx.WriteJSON(ctx, err)
		return
	}
	results := make([]response.CustomerQuickActionResponse, 0, len(actions))
	for _, action := range actions {
		results = append(results, response.CustomerQuickActionResponse{
			Code: action.Code, Title: action.Title, Description: action.Description,
		})
	}
	httpx.WriteJSON(ctx, results)
}

func ConversationPostQuick_action(ctx *gin.Context) {
	if services.ChannelService.GetEnabledChannel(ctx) == nil {
		httpx.WriteJSON(ctx, httpx.JsonErrorMsg(ctx, "error.e0211"))
		return
	}
	external := httpx.GetExternalUser(ctx)
	if external == nil {
		httpx.WriteJSON(ctx, httpx.JsonErrorMsg(ctx, "error.e0150"))
		return
	}
	req := request.ExecuteCustomerQuickActionRequest{}
	if err := params.ReadJSON(ctx, &req); err != nil {
		httpx.WriteJSON(ctx, err)
		return
	}
	customerMessage, replyMessage, err := services.CustomerQuickActionService.ExecuteAndRecord(
		ctx, req.ConversationID, req.Code, req.ClientMsgID, *external, httpx.GetRequestID(ctx),
	)
	if err != nil {
		httpx.WriteJSON(ctx, err)
		return
	}
	httpx.WriteJSON(ctx, response.CustomerQuickActionExecutionResponse{
		CustomerMessage: builders.BuildMessageWithLocale(customerMessage, i18nx.Locale(ctx)),
		ReplyMessage:    builders.BuildMessageWithLocale(replyMessage, i18nx.Locale(ctx)),
	})
}

func ConversationGetBy(ctx *gin.Context) {
	id, ok := httpx.GetPathInt64(ctx, "id")
	if !ok {
		return
	}
	if services.ChannelService.GetEnabledChannel(ctx) == nil {
		httpx.WriteJSON(ctx, httpx.JsonErrorMsg(ctx, "error.e0211"))
		return
	}
	external := httpx.GetExternalUser(ctx)
	if external == nil {
		httpx.WriteJSON(ctx, httpx.JsonErrorMsg(ctx, "error.e0150"))
		return
	}

	item := services.ConversationService.Get(id)
	if item == nil {
		httpx.WriteJSON(ctx, httpx.JsonErrorMsg(ctx, "error.e0116"))
		return
	}
	if !services.ConversationService.IsCustomerConversationOwner(item, *external) {
		httpx.WriteJSON(ctx, httpx.JsonErrorMsg(ctx, "error.e0222"))
		return
	}

	detail := response.ConversationDetailResponse{
		ConversationResponse: builders.BuildConversationWithLocale(item, i18nx.Locale(ctx)),
		Participants:         builders.BuildParticipantResponses(id),
	}
	httpx.WriteJSON(ctx, detail)
}

func ConversationPostCreate_or_match(ctx *gin.Context) {
	channel := services.ChannelService.GetEnabledChannel(ctx)
	if channel == nil {
		httpx.WriteJSON(ctx, httpx.JsonErrorMsg(ctx, "error.e0211"))
		return
	}
	external := httpx.GetExternalUser(ctx)
	if external == nil {
		httpx.WriteJSON(ctx, httpx.JsonErrorMsg(ctx, "error.e0150"))
		return
	}

	item, err := services.ConversationService.Create(*external, channel.ID, channel.AIAgentID)
	if err != nil {
		slog.ErrorContext(ctx.Request.Context(), "create or match conversation failed",
			"channel_id", channel.ID,
			"ai_agent_id", channel.AIAgentID,
			"error", err,
		)
		httpx.WriteJSON(ctx, err)
		return
	}
	httpx.WriteJSON(ctx, builders.BuildConversationWithLocale(item, i18nx.Locale(ctx)))
}

func ConversationPostClose(ctx *gin.Context) {
	if services.ChannelService.GetEnabledChannel(ctx) == nil {
		httpx.WriteJSON(ctx, httpx.JsonErrorMsg(ctx, "error.e0211"))
		return
	}
	external := httpx.GetExternalUser(ctx)
	if external == nil {
		httpx.WriteJSON(ctx, httpx.JsonErrorMsg(ctx, "error.e0150"))
		return
	}

	req := request.CloseConversationRequest{}
	if err := params.ReadJSON(ctx, &req); err != nil {
		httpx.WriteJSON(ctx, err)
		return
	}
	if err := services.ConversationService.CloseCustomerConversation(req.ConversationID, *external); err != nil {
		httpx.WriteJSON(ctx, err)
		return
	}
	httpx.WriteJSON(ctx, nil)
}