package queryservice_test

import (
	"encoding/json"
	"fmt"
	"net/http"
	"net/http/httptest"
	queryservice "queryorchestration/api/queryService"
	"queryorchestration/internal/database"
	"queryorchestration/internal/database/repository"
	"queryorchestration/internal/query"
	"strings"
	"testing"

	"github.com/go-playground/validator/v10"
	"github.com/google/uuid"
	"github.com/jackc/pgx/v5"
	"github.com/jackc/pgx/v5/pgtype"
	"github.com/labstack/echo/v4"
	"github.com/pashagolub/pgxmock/v3"
	"github.com/stretchr/testify/assert"
)

func TestCreateQuery(t *testing.T) {
	pool, err := pgxmock.NewPool()
	if err != nil {
		t.Fatalf("failed to open pgxmock database: %v", err)
	}
	queries := repository.New(pool)
	db := &database.Connection{
		Queries: queries,
		Pool:    pool,
	}

	cons := queryservice.NewControllers(validator.New(), &queryservice.Services{
		Query: query.New(db),
	})

	body := queryservice.QueryCreate{
		Type: queryservice.CONTEXTFULL,
	}
	bodyBytes, err := json.Marshal(body)
	assert.Nil(t, err)

	e := echo.New()
	req := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(string(bodyBytes)))
	req.Header.Set(echo.HeaderContentType, echo.MIMEApplicationJSON)
	rec := httptest.NewRecorder()
	ctx := e.NewContext(req, rec)

	id := uuid.New()

	pool.ExpectBeginTx(pgx.TxOptions{})
	pool.ExpectQuery("-- name: CreateQuery :one").WithArgs(repository.QuerytypeContextFull).WillReturnRows(
		pgxmock.NewRows([]string{"id"}).
			AddRow(database.MustToDBUUID(id)),
	)
	pool.ExpectCommit()

	err = cons.CreateQuery(ctx)
	assert.Nil(t, err)
	assert.Equal(t, http.StatusCreated, rec.Code)
	assert.Equal(t, fmt.Sprintf("{\"id\":\"%s\"}\n", id), rec.Body.String())
}

func TestListQueries(t *testing.T) {
	pool, err := pgxmock.NewPool()
	if err != nil {
		t.Fatalf("failed to open pgxmock database: %v", err)
	}
	queries := repository.New(pool)
	db := &database.Connection{
		Queries: queries,
		Pool:    pool,
	}

	cons := queryservice.NewControllers(validator.New(), &queryservice.Services{
		Query: query.New(db),
	})

	e := echo.New()
	req := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(""))
	rec := httptest.NewRecorder()
	ctx := e.NewContext(req, rec)

	id := uuid.New()

	pool.ExpectQuery("-- name: ListQueries :many").WithArgs().WillReturnRows(
		pgxmock.NewRows([]string{"id", "type", "activeVersion", "latestVersion", "config", "requiredIds"}).
			AddRow(database.MustToDBUUID(id), repository.QuerytypeContextFull, int32(1), int32(2), []byte(""), []pgtype.UUID{}),
	)

	err = cons.ListQueries(ctx)
	assert.Nil(t, err)
	assert.Equal(t, http.StatusOK, rec.Code)

	var res queryservice.ListQueries
	err = json.Unmarshal(rec.Body.Bytes(), &res)
	assert.Nil(t, err)
	assert.NotNil(t, res.Queries)
	assert.ElementsMatch(t, res.Queries, []queryservice.Query{
		{
			Id:            id.String(),
			Type:          queryservice.CONTEXTFULL,
			ActiveVersion: 1,
			LatestVersion: 2,
		},
	})
}

func TestGetQuery(t *testing.T) {
	pool, err := pgxmock.NewPool()
	if err != nil {
		t.Fatalf("failed to open pgxmock database: %v", err)
	}
	queries := repository.New(pool)
	db := &database.Connection{
		Queries: queries,
		Pool:    pool,
	}

	cons := queryservice.NewControllers(validator.New(), &queryservice.Services{
		Query: query.New(db),
	})

	e := echo.New()
	req := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(""))
	rec := httptest.NewRecorder()
	ctx := e.NewContext(req, rec)

	id := uuid.New()

	ctx.Set("id", id)

	pool.ExpectQuery("-- name: GetQuery :one").WithArgs(database.MustToDBUUID(id)).WillReturnRows(
		pgxmock.NewRows([]string{"id", "type", "activeVersion", "latestVersion", "config", "requiredIds"}).
			AddRow(database.MustToDBUUID(id), repository.QuerytypeContextFull, int32(1), int32(2), nil, []pgtype.UUID{}),
	)

	err = cons.GetQuery(ctx, id.String())
	assert.Nil(t, err)
	assert.Equal(t, http.StatusOK, rec.Code)

	var res queryservice.Query
	err = json.Unmarshal(rec.Body.Bytes(), &res)
	assert.Nil(t, err)
	assert.EqualExportedValues(t, queryservice.Query{
		Id:            id.String(),
		Type:          queryservice.CONTEXTFULL,
		ActiveVersion: 1,
		LatestVersion: 2,
	}, res)
}

func TestUpdateQuery(t *testing.T) {
	pool, err := pgxmock.NewPool()
	if err != nil {
		t.Fatalf("failed to open pgxmock database: %v", err)
	}
	queries := repository.New(pool)
	db := &database.Connection{
		Queries: queries,
		Pool:    pool,
	}

	cons := queryservice.NewControllers(validator.New(), &queryservice.Services{
		Query: query.New(db),
	})

	av := int32(2)
	body := queryservice.QueryUpdate{
		ActiveVersion: &av,
	}
	bodyBytes, err := json.Marshal(body)
	assert.Nil(t, err)

	e := echo.New()
	req := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(string(bodyBytes)))
	req.Header.Set(echo.HeaderContentType, echo.MIMEApplicationJSON)
	rec := httptest.NewRecorder()
	ctx := e.NewContext(req, rec)

	id := uuid.New()

	ctx.Set("id", id)

	pool.ExpectQuery("-- name: GetQuery :one").WithArgs(database.MustToDBUUID(id)).WillReturnRows(
		pgxmock.NewRows([]string{"id", "type", "activeVersion", "latestVersion", "config", "requiredIds"}).
			AddRow(database.MustToDBUUID(id), repository.QuerytypeContextFull, int32(1), int32(2), []byte(""), []pgtype.UUID{}),
	)

	pool.ExpectBeginTx(pgx.TxOptions{})
	pool.ExpectExec("name: UpdateQuery :exec").WithArgs(av, int32(3), database.MustToDBUUID(id)).
		WillReturnResult(pgxmock.NewResult("", 1))
	pool.ExpectCommit()

	err = cons.UpdateQuery(ctx, id.String())
	assert.Nil(t, err)
	assert.Equal(t, http.StatusOK, rec.Code)
	assert.Empty(t, rec.Body.String())
}

func TestTestQuery(t *testing.T) {
	pool, err := pgxmock.NewPool()
	if err != nil {
		t.Fatalf("failed to open pgxmock database: %v", err)
	}
	queries := repository.New(pool)
	db := &database.Connection{
		Queries: queries,
		Pool:    pool,
	}

	cons := queryservice.NewControllers(validator.New(), &queryservice.Services{
		Query: query.New(db),
	})

	body := queryservice.QueryTestRequest{
		DocumentId: uuid.NewString(),
	}
	bodyBytes, err := json.Marshal(body)
	assert.Nil(t, err)

	e := echo.New()
	req := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(string(bodyBytes)))
	req.Header.Set(echo.HeaderContentType, echo.MIMEApplicationJSON)
	rec := httptest.NewRecorder()
	ctx := e.NewContext(req, rec)

	id := uuid.New()

	err = cons.TestQuery(ctx, id.String())
	assert.Nil(t, err)
	assert.Equal(t, http.StatusOK, rec.Code)

	var res queryservice.QueryTestResponse
	err = json.Unmarshal(rec.Body.Bytes(), &res)
	assert.Nil(t, err)
	assert.EqualExportedValues(t, queryservice.QueryTestResponse{
		Value: "",
	}, res)
}