package openapi_test

import (
	"encoding/json"
	omni "git.yuntuo.hk/k2safe/go-omni"
	"git.yuntuo.hk/k2safe/go-omni/httpx"
	"git.yuntuo.hk/k2safe/go-omni/openapi"
	"net/http/httptest"
	"testing"
)

func TestRouteAndContract(t *testing.T) {
	type item struct {
		ID        int64           `json:"id,string"`
		RequestID string          `json:"requestId,omitempty"`
		Payload   json.RawMessage `json:"payload"`
	}
	schema, err := openapi.SchemaOf[item]()
	if err != nil || schema.Properties["id"].Type != "string" || schema.Properties["payload"].Type != "" {
		t.Fatal(schema, err)
	}
	api, _ := openapi.New("Test API", "1")
	app := omni.New(omni.WithLogger(false))
	op := openapi.Operation{Method: "GET", Path: "/items/:id", OperationID: "getItem", Parameters: []openapi.Parameter{{Name: "id", In: "path", Required: true, Schema: &openapi.Schema{Type: "string"}}}, Responses: map[int]openapi.Response{200: {Description: "OK", Schema: openapi.Envelope(schema)}}}
	if err = api.Handle(app, op, func(c *httpx.Context) error { return c.OK(item{ID: 1, Payload: json.RawMessage(`{}`)}) }); err != nil {
		t.Fatal(err)
	}
	// Caller edits must not mutate the published contract.
	schema.Properties["id"].Type = "boolean"
	if err = api.Handle(app, op, func(*httpx.Context) error { return nil }); err == nil {
		t.Fatal("duplicate accepted")
	}
	app.GET("/openapi.json", api.Handler())
	r := httptest.NewRecorder()
	app.ServeHTTP(r, httptest.NewRequest("GET", "/openapi.json", nil))
	var doc struct {
		OpenAPI string                     `json:"openapi"`
		Paths   map[string]json.RawMessage `json:"paths"`
	}
	if err = json.Unmarshal(r.Body.Bytes(), &doc); err != nil || doc.OpenAPI != "3.0.3" || doc.Paths["/items/{id}"] == nil {
		t.Fatal(r.Body.String(), err)
	}
	r = httptest.NewRecorder()
	app.ServeHTTP(r, httptest.NewRequest("GET", "/items/1", nil))
	if r.Code != 200 {
		t.Fatal(r.Code)
	}
	type recursive struct {
		Next *recursive `json:"next"`
	}
	if _, err = openapi.SchemaOf[recursive](); err == nil {
		t.Fatal("recursive DTO silently truncated")
	}
}