package documentinit

import (
	"context"
	"errors"
	"fmt"
	"testing"

	"queryorchestration/internal/database/repository"
	"queryorchestration/internal/document"
	queuemock "queryorchestration/mocks/queue"

	"github.com/stretchr/testify/require"

	"github.com/aws/aws-sdk-go-v2/service/sqs"
	"github.com/google/uuid"
	"github.com/pashagolub/pgxmock/v3"
	"github.com/stretchr/testify/assert"
	"github.com/stretchr/testify/mock"
)

func TestCreate(t *testing.T) {
	ctx := context.Background()

	pool, err := pgxmock.NewPool()
	require.NoError(t, err)
	cfg := &DocInitConfig{}
	cfg.DBPool = pool
	cfg.DBQueries = repository.New(pool)
	mockSQS := queuemock.NewMockSQSClient(t)
	cfg.QueueClient = mockSQS
	cfg.DocumentSyncURL = "/i/am/here"

	svc := New(cfg)

	clientId := "hi"
	doc := document.DocumentSummary{
		ID:       uuid.New(),
		ClientID: clientId,
		Hash:     "example_hash",
	}
	location := document.Location{
		Bucket: "example_bucket",
		Key:    "/i/am/here",
	}

	pool.ExpectQuery("name: GetDocumentIDByHash :one").WithArgs(doc.Hash, doc.ClientID).WillReturnRows(
		pgxmock.NewRows([]string{"id"}),
	)
	pool.ExpectBegin()
	pool.ExpectQuery("name: CreateDocument :one").WithArgs(doc.ClientID, doc.Hash).
		WillReturnRows(
			pgxmock.NewRows([]string{"id"}).
				AddRow(doc.ID),
		)
	pool.ExpectExec("name: AddDocumentEntry :exec").WithArgs(doc.ID, location.Bucket, location.Key).
		WillReturnResult(pgxmock.NewResult("", 1))
	pool.ExpectCommit()
	pool.ExpectQuery("name: GetDocumentSummary :one").WithArgs(doc.ID).
		WillReturnRows(
			pgxmock.NewRows([]string{"id", "clientId", "hash"}).
				AddRow(doc.ID, doc.ClientID, doc.Hash),
		)
	pool.ExpectQuery("name: GetClient :one").WithArgs(clientId).WillReturnRows(
		pgxmock.NewRows([]string{"id", "clientId", "canSync"}).
			AddRow(clientId, clientId, true),
	)
	pool.ExpectQuery("name: GetClient :one").WithArgs(clientId).WillReturnRows(
		pgxmock.NewRows([]string{"id", "name", "canSync"}).
			AddRow(clientId, "client_name", true),
	)

	mockSQS.EXPECT().
		SendMessage(
			mock.Anything,
			mock.MatchedBy(func(in *sqs.SendMessageInput) bool {
				return *in.QueueUrl == cfg.DocumentSyncURL && *in.MessageBody == fmt.Sprintf("{\"id\":\"%s\"}", doc.ID.String())
			}),
			mock.Anything,
		).
		Return(&sqs.SendMessageOutput{}, nil)

	id, err := svc.Create(ctx, &Create{
		ClientID: doc.ClientID,
		Location: location,
		Hash:     doc.Hash,
	})
	require.NoError(t, err)
	assert.Equal(t, doc.ID, id)
}

func TestGetCreateParams(t *testing.T) {
	ctx := context.Background()

	pool, err := pgxmock.NewPool()
	require.NoError(t, err)
	cfg := &DocInitConfig{}
	cfg.DBPool = pool
	cfg.DBQueries = repository.New(pool)

	svc := New(cfg)

	doc := document.DocumentSummary{
		ClientID: "hello",
		Hash:     "example_hash",
	}
	location := document.Location{
		Bucket: "example_bucket",
		Key:    "/i/am/here",
	}

	pool.ExpectQuery("name: GetDocumentIDByHash :one").WithArgs(doc.Hash, doc.ClientID).WillReturnRows(
		pgxmock.NewRows([]string{"id"}),
	)

	params, err := svc.getCreateParams(ctx, &Create{
		ClientID: doc.ClientID,
		Location: location,
		Hash:     doc.Hash,
	})
	require.NoError(t, err)
	assert.Equal(t, &createDocumentParams{
		ClientID: doc.ClientID,
		Hash:     doc.Hash,
		Location: location,
	}, params)
}

func TestGetCreateParamsExisting(t *testing.T) {
	ctx := context.Background()

	pool, err := pgxmock.NewPool()
	require.NoError(t, err)
	cfg := &DocInitConfig{}
	cfg.DBPool = pool
	cfg.DBQueries = repository.New(pool)

	svc := New(cfg)

	doc := document.DocumentSummary{
		ID:       uuid.New(),
		ClientID: "hello",
		Hash:     "example_hash",
	}
	location := document.Location{
		Bucket: "example_bucket",
		Key:    "/i/am/here",
	}

	pool.ExpectQuery("name: GetDocumentIDByHash :one").WithArgs(doc.Hash, doc.ClientID).WillReturnRows(
		pgxmock.NewRows([]string{"id"}).
			AddRow(doc.ID),
	)

	params, err := svc.getCreateParams(ctx, &Create{
		ClientID: doc.ClientID,
		Location: location,
		Hash:     doc.Hash,
	})
	require.NoError(t, err)
	dbid := doc.ID
	assert.Equal(t, &createDocumentParams{
		ID:       &dbid,
		ClientID: doc.ClientID,
		Hash:     doc.Hash,
		Location: location,
	}, params)
}

func TestGetCreateParamsCurrentDocErr(t *testing.T) {
	ctx := context.Background()

	pool, err := pgxmock.NewPool()
	require.NoError(t, err)
	cfg := &DocInitConfig{}
	cfg.DBPool = pool
	cfg.DBQueries = repository.New(pool)

	svc := New(cfg)

	doc := document.DocumentSummary{
		ClientID: "hello",
		Hash:     "example_hash",
	}
	location := document.Location{
		Bucket: "example_bucket",
		Key:    "/i/am/here",
	}

	pool.ExpectQuery("name: GetDocumentIDByHash :one").WithArgs(doc.Hash, doc.ClientID).
		WillReturnError(errors.New("db err"))

	_, err = svc.getCreateParams(ctx, &Create{
		ClientID: doc.ClientID,
		Location: location,
	})
	assert.Error(t, err)
}

func TestSubmitCreate(t *testing.T) {
	ctx := context.Background()

	pool, err := pgxmock.NewPool()
	require.NoError(t, err)
	cfg := &DocInitConfig{}
	cfg.DBPool = pool
	cfg.DBQueries = repository.New(pool)

	svc := New(cfg)

	doc := document.DocumentSummary{
		ID:       uuid.New(),
		ClientID: "hello",
		Hash:     "example_hash",
	}
	location := document.Location{
		Bucket: "example_bucket",
		Key:    "/i/am/here",
	}

	pool.ExpectBegin()
	pool.ExpectQuery("name: CreateDocument :one").WithArgs(doc.ClientID, doc.Hash).
		WillReturnRows(
			pgxmock.NewRows([]string{"id"}).
				AddRow(doc.ID),
		)
	pool.ExpectExec("name: AddDocumentEntry :exec").WithArgs(doc.ID, location.Bucket, location.Key).
		WillReturnResult(pgxmock.NewResult("", 1))
	pool.ExpectCommit()

	id, err := svc.submitCreate(ctx, &createDocumentParams{
		ClientID: doc.ClientID,
		Location: location,
		Hash:     doc.Hash,
	})
	require.NoError(t, err)
	assert.Equal(t, doc.ID, id)
}

func TestSubmitCreateExists(t *testing.T) {
	ctx := context.Background()

	pool, err := pgxmock.NewPool()
	require.NoError(t, err)
	cfg := &DocInitConfig{}
	cfg.DBPool = pool
	cfg.DBQueries = repository.New(pool)

	svc := New(cfg)

	doc := document.DocumentSummary{
		ID:       uuid.New(),
		ClientID: "hello",
		Hash:     "example_hash",
	}
	location := document.Location{
		Bucket: "example_bucket",
		Key:    "/i/am/here",
	}

	pool.ExpectBegin()
	pool.ExpectExec("name: AddDocumentEntry :exec").WithArgs(doc.ID, location.Bucket, location.Key).
		WillReturnResult(pgxmock.NewResult("", 1))
	pool.ExpectCommit()

	docid := doc.ID
	id, err := svc.submitCreate(ctx, &createDocumentParams{
		ID:       &docid,
		ClientID: doc.ClientID,
		Location: location,
		Hash:     doc.Hash,
	})
	require.NoError(t, err)
	assert.Equal(t, doc.ID, id)
}