package migrations_test

import (
	"fmt"
	"strings"
	"testing"

	"git.icedream.tech/icedream/loggalicious/backend/internal/database"
	"git.icedream.tech/icedream/loggalicious/backend/internal/database/migrations"
	"github.com/fjl/go-couchdb"
	. "github.com/smartystreets/goconvey/convey"
)

const couchDBUrl = "http://couchdb:5984"

func Test_Migration(t *testing.T) {
	couchDB, err := couchdb.NewClient(couchDBUrl, nil)
	if err != nil {
		t.Error(err)
		return
	}
	db := &database.DatabaseServer{Client: couchDB}

	// Wipe database
	dbNames, err := couchDB.AllDBs()
	if err != nil {
		t.Error(err)
		return
	}
	for _, dbName := range dbNames {
		if strings.HasPrefix(dbName, "_") {
			continue
		}
		err = couchDB.DeleteDB(dbName)
		if err != nil {
			t.Error(err)
			return
		}
	}

	Convey("Migrations", t, func() {

		Convey("At least one version is registered", func() {
			versions := migrations.RegisteredVersions()

			So(len(versions), ShouldBeGreaterThan, 0)

			for _, version := range versions {
				Convey(fmt.Sprintf("Version %s should have at least one migration", version), func() {
					So(len(migrations.RegisteredMigrations(version)), ShouldBeGreaterThan, 0)
				})
			}
		})

		Convey("Migrations from blank setup works", func() {
			oldVersion, _, err := db.GetMigrationDatabase().GetVersion()
			So(err, ShouldBeNil)
			err = migrations.Run(db)
			So(err, ShouldBeNil)
			version, _, err := db.GetMigrationDatabase().GetVersion()
			So(err, ShouldBeNil)
			So(version, ShouldNotEqual, oldVersion)
		})

	})
}