add: add mcp server amap tools (#1951)

plugins/wasm-go/mcp-servers/amap-tools/tools/maps_distance.go

@@ -0,0 +1,80 @@
+package tools
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"net/url"
+
+	"amap-tools/server"
+
+	"github.com/alibaba/higress/plugins/wasm-go/pkg/log"
+	"github.com/alibaba/higress/plugins/wasm-go/pkg/wrapper"
+)
+
+type DistanceRequest struct {
+	Origins     string `json:"origins" jsonschema_description:"起点经度，纬度，可以传多个坐标，使用分号隔离，比如120,30;120,31，坐标格式为：经度，纬度"`
+	Destination string `json:"destination" jsonschema_description:"终点经度，纬度，坐标格式为：经度，纬度"`
+	Type        string `json:"type" jsonschema_description:"距离测量类型,1代表驾车距离测量，0代表直线距离测量，3步行距离测量"`
+}
+
+func (t DistanceRequest) Description() string {
+	return "距离测量 API 可以测量两个经纬度坐标之间的距离,支持驾车、步行以及球面距离测量"
+}
+
+func (t DistanceRequest) InputSchema() map[string]any {
+	return wrapper.ToInputSchema(&DistanceRequest{})
+}
+
+func (t DistanceRequest) Create(params []byte) wrapper.MCPTool[server.AmapMCPServer] {
+	request := &DistanceRequest{}
+	json.Unmarshal(params, &request)
+	return request
+}
+
+func (t DistanceRequest) Call(ctx wrapper.HttpContext, config server.AmapMCPServer) error {
+	err := server.ParseFromRequest(ctx, &config)
+	if err != nil {
+		log.Errorf("parse config from request failed, err:%s", err)
+		return err
+	}
+	err = config.ConfigHasError()
+	if err != nil {
+		return err
+	}
+
+	apiKey := config.ApiKey
+	if apiKey == "" {
+		return fmt.Errorf("amap API-KEY is not set")
+	}
+
+	url := fmt.Sprintf("http://restapi.amap.com/v3/distance?key=%s&origins=%s&destination=%s&type=%s&source=ts_mcp", apiKey, url.QueryEscape(t.Origins), url.QueryEscape(t.Destination), url.QueryEscape(t.Type))
+	return ctx.RouteCall(http.MethodGet, url,
+		[][2]string{{"Accept", "application/json"}}, nil, func(statusCode int, responseHeaders http.Header, responseBody []byte) {
+			if statusCode != http.StatusOK {
+				ctx.OnMCPToolCallError(fmt.Errorf("distance call failed, status: %d", statusCode))
+				return
+			}
+			var response struct {
+				Status string `json:"status"`
+				Info   string `json:"info"`
+				Results []struct {
+					OriginID string `json:"origin_id"`
+					DestID   string `json:"dest_id"`
+					Distance string `json:"distance"`
+					Duration string `json:"duration"`
+				} `json:"results"`
+			}
+			err := json.Unmarshal(responseBody, &response)
+			if err != nil {
+				ctx.OnMCPToolCallError(fmt.Errorf("failed to parse distance response: %v", err))
+				return
+			}
+			if response.Status != "1" {
+				ctx.OnMCPToolCallError(fmt.Errorf("distance failed: %s", response.Info))
+				return
+			}
+			result := fmt.Sprintf(`{"results": %s}`, string(responseBody))
+			ctx.SendMCPToolTextResult(result)
+		})
+}