package mongo

import (
	"os"
	"context"
	"strings"
	"testing"
	"testing/synctest"
	"encoding/json"

	"go.mongodb.org/mongo-driver/v2/bson"
)

func TestInsertOne(t *testing.T) {
	client := GetMongoClient()

	data := map[string]any {
		"_id": "su_123456",
		"name": "MyName",
		"age": int32(25),
	}

	o, err := client.InsertOne(context.Background(), "mydb", "mycollection", data)
	if err != nil {
		t.Fatalf("Failed to insertOne %#v", err)
	}

  // raw query
  var results bson.M
  filter := bson.M{ "name": "MyName" }

  c := client.Client.Database("mydb").Collection("mycollection")
  c.FindOne(context.Background(), filter).Decode(&results)

	AssertSubset(t, o, results, "Should have been equal")
}

func TestInsertOne_DataStruct(t *testing.T) {
	client := GetMongoClient()

	data := &Sample {
		Id: "su_123457",
		Name: "MyName200",
		Age: 25,
	}

	o, err := client.InsertOneFromStruct(context.Background(), "mydb", "mycollection", data)
	if err != nil {
		t.Fatalf("Failed to insertOne %#v", err)
	}

  // raw query
  var results bson.M
  filter := map[string]any { "name": "MyName200" }

  c := client.Client.Database("mydb").Collection("mycollection")
  c.FindOne(context.Background(), filter).Decode(&results)

  AssertSubset(t, o, results, "Should have been equal")
}

func TestInsertOne_WithIdPrefix(t *testing.T) {
	// Read JSON file
	data, err := os.ReadFile("./.test/user.json")
	if err != nil {
		t.Fatal(err)
	}

	var user bson.M
	if err := json.Unmarshal(data, &user); err != nil {
		t.Fatalf("Length: %d, First bytes: %x\n", len(data), data[:4])
	}

	client := GetMongoClient()
	client.AddDefinition(user)

	in := map[string]any {
		"name": "MyName112",
		"age": int32(25),
	}

	o, err := client.InsertOne(context.Background(), "mydb", "user", in)
	if err != nil {
		t.Fatalf("Failed to insertOne %#v", err)
	}

	// raw query
  var results bson.M
	filter := map[string]any { "name": "MyName112" }
	c := client.Client.Database("mydb").Collection("user")
  c.FindOne(context.Background(), filter).Decode(&results)

	if !strings.HasPrefix(results["_id"].(string), "usr_") {
		t.Fatal("_id should have been prefixed")
	}

  AssertSubset(t, o, results, "Should have been equal")
}

func TestPrepareForInsert_WithoutId(t *testing.T) {
	data := map[string]any {
		"name": "My Name Is",
	}

	prepareForInsert(data, "")

	if id, okid := data["_id"]; !okid || id == "" {
		t.Fatal("Failed to add Id")
	}
}

func TestPrepareForInsert_ExistingId(t *testing.T) {
	data := map[string]any {
		"_id": "myidxxxxxx",
		"name": "My Name Is",
	}

	prepareForInsert(data, "")

	if data["_id"] == "" {
		t.Fatal("id was updated")
	}
}

func TestEnsureId(t *testing.T) {
	data := map[string]any {
		"Name": "My Name Is",
	}

	ensureId(data, "")

	if id, okid := data["_id"]; !okid || id == "" {
		t.Fatal("Failed to add Id")
	}
}

func TestEnsureId_EmptyId(t *testing.T) {
	data := map[string]any {
		"_id": "myidxxxxxx",
		"name": "My Name Is",
	}

	ensureId(data, "")

	if data["_id"] == "" {
		t.Fatal("Id was updated")
	}
}

func TestEnsureId_ExistingId(t *testing.T) {
	data := map[string]any {
		"_id": "",
		"name": "My Name Is",
	}

	ensureId(data, "")

	if id, okid := data["_id"]; !okid || id == "" {
		t.Fatal("Failed to add Id")
	}
}

func TestEnsureCreatedAt(t *testing.T) {
	data := map[string]any {
		"name": "My Name Is",
	}

	synctest.Test(t, func(t *testing.T) {
		now := ensureCreatedAt(data)

		if createdAt, _ := data["created_at"]; createdAt != now {
			t.Fatal("Failed to add CreatedAt")
		}
	})
}