// Package handler provides HTTP handlers for various endpoints.
package handler

import (
	"net/http"
	"strconv"

	"modelRT/database"
	"modelRT/diagram"
	"modelRT/logger"
	"modelRT/network"

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

// CircuitDiagramLoadHandler define circuit diagram load process API
// @Summary load circuit diagram info
// @Description load circuit diagram info by page id
// @Tags load circuit_diagram
// @Accept  json
// @Produce  json
// @Param page_id path int64 true "page ID"
// @Success 200 {object} network.SuccessResponse "request process success"
// @Failure 400 {object} network.FailureResponse "request process failed"
// @Router /model/diagram_load/{page_id} [get]
func CircuitDiagramLoadHandler(c *gin.Context) {
	pgClient := database.GetPostgresDBClient()

	pageID, err := strconv.ParseInt(c.Query("page_id"), 10, 64)
	if err != nil {
		logger.Error(c, "get pageID from url param failed", "error", err)

		resp := network.FailureResponse{
			Code: http.StatusBadRequest,
			Msg:  err.Error(),
			Payload: map[string]interface{}{
				"page_id": pageID,
			},
		}
		c.JSON(http.StatusOK, resp)
		return
	}

	topologicInfo, err := diagram.GetGraphMap(pageID)
	if err != nil {
		logger.Error(c, "get topologic data from set by pageID failed", "error", err)

		resp := network.FailureResponse{
			Code: http.StatusBadRequest,
			Msg:  err.Error(),
			Payload: map[string]interface{}{
				"page_id": pageID,
			},
		}
		c.JSON(http.StatusOK, resp)
		return
	}
	payload := make(map[string]interface{})
	payload["root_vertex"] = topologicInfo.RootVertex
	payload["topologic"] = topologicInfo.VerticeLinks

	componentParamMap := make(map[string]any)
	for _, VerticeLink := range topologicInfo.VerticeLinks {
		for _, componentUUID := range VerticeLink {
			component, err := database.QueryComponentByUUID(c, pgClient, componentUUID)
			if err != nil {
				logger.Error(c, "get component id info from DB by uuid failed", "error", err)

				resp := network.FailureResponse{
					Code: http.StatusBadRequest,
					Msg:  err.Error(),
					Payload: map[string]interface{}{
						"uuid": componentUUID,
					},
				}
				c.JSON(http.StatusOK, resp)
				return
			}

			componentParams, err := diagram.GetComponentMap(component.GlobalUUID.String())
			if err != nil {
				logger.Error(c, "get component data from set by uuid failed", "error", err)

				resp := network.FailureResponse{
					Code: http.StatusBadRequest,
					Msg:  err.Error(),
					Payload: map[string]interface{}{
						"uuid": componentUUID,
					},
				}
				c.JSON(http.StatusOK, resp)
				return
			}
			componentParamMap[componentUUID.String()] = componentParams
		}
	}

	rootVertexUUID := topologicInfo.RootVertex.String()
	rootComponent, err := database.QueryComponentByUUID(c, pgClient, topologicInfo.RootVertex)
	if err != nil {
		logger.Error(c, "get component id info from DB by uuid failed", "error", err)

		resp := network.FailureResponse{
			Code: http.StatusBadRequest,
			Msg:  err.Error(),
			Payload: map[string]interface{}{
				"uuid": topologicInfo.RootVertex,
			},
		}
		c.JSON(http.StatusOK, resp)
		return
	}

	rootComponentParam, err := diagram.GetComponentMap(rootComponent.GlobalUUID.String())
	if err != nil {
		logger.Error(c, "get component data from set by uuid failed", "error", err)

		resp := network.FailureResponse{
			Code: http.StatusBadRequest,
			Msg:  err.Error(),
			Payload: map[string]interface{}{
				"uuid": rootVertexUUID,
			},
		}
		c.JSON(http.StatusOK, resp)
		return
	}
	componentParamMap[rootVertexUUID] = rootComponentParam

	payload["component_params"] = componentParamMap

	resp := network.SuccessResponse{
		Code:    http.StatusOK,
		Msg:     "success",
		Payload: payload,
	}
	c.JSON(http.StatusOK, resp)
}