package pilgrim_conf_test

import (
	"testing"

	"github.com/stretchr/testify/assert"
	pilgrim_mock "mvvasilev.dev/pilgrim/internal/mocks"
	"mvvasilev.dev/pilgrim/internal/pilgrim_conf"
)

const CliUrlValue = "postgres://cli_host:5432/cli_segment1/cli_segment2?cli_arg1=cli_val1&cli_arg2=cli_val2"
const CliDriverValue = pilgrim_conf.DbDriver_Postgres

func setupMockDefaults(
	env *pilgrim_mock.EnvVarRetriever,
	cli *pilgrim_mock.CliFlagRetriever,
) {
	env.EXPECT().Url().Return("", false)
	env.EXPECT().Driver().Return(pilgrim_conf.DbDriver_Postgres, false)
	env.EXPECT().Username().Return("", false)
	env.EXPECT().Password().Return("", false)
	env.EXPECT().Host().Return("", false)
	env.EXPECT().Port().Return("", false)
	env.EXPECT().Segments().Return([]string{}, false)
	env.EXPECT().Args().Return(map[string]string{}, false)
	env.EXPECT().Directory().Return("", false)
	env.EXPECT().MigrationTable().Return("", false)
	env.EXPECT().MigrationTableSchema().Return("", false)

	cli.EXPECT().Url().Return("", false)
	cli.EXPECT().Driver().Return(pilgrim_conf.DbDriver_Postgres, false)
	cli.EXPECT().Username().Return("", false)
	cli.EXPECT().Password().Return("", false)
	cli.EXPECT().Host().Return("", false)
	cli.EXPECT().Port().Return("", false)
	cli.EXPECT().Segments().Return([]string{}, false)
	cli.EXPECT().Args().Return(map[string]string{}, false)
	cli.EXPECT().Directory().Return("", false)
	cli.EXPECT().IsUp().Return(false, false)
	cli.EXPECT().IsDown().Return(false, false)
	cli.EXPECT().Script().Return("", false)
	cli.EXPECT().MigrationTable().Return("", false)
	cli.EXPECT().MigrationTableSchema().Return("", false)
	cli.EXPECT().IsChecksumValidationEnabled().Return(false, false)
	cli.EXPECT().IsStrictOrderingEnabled().Return(false, false)
	cli.EXPECT().IsValidatingMigrationOrder().Return(false, false)
	cli.EXPECT().IsValidatingLatest().Return(false, false)
	cli.EXPECT().IsValidatingChecksums().Return(false, false)
}

func runTest(
	setupMocks func(
		env *pilgrim_mock.EnvVarRetriever,
		cli *pilgrim_mock.CliFlagRetriever,
	),
	test func(
		env *pilgrim_mock.EnvVarRetriever,
		cli *pilgrim_mock.CliFlagRetriever,
	),
) {
	env, cli := new(pilgrim_mock.EnvVarRetriever), new(pilgrim_mock.CliFlagRetriever)

	setupMocks(env, cli)

	setupMockDefaults(env, cli)

	test(env, cli)
}

func Test_PilgrimContext_CliDriverOverridesCliUrlDriver(t *testing.T) {
	runTest(
		func(env *pilgrim_mock.EnvVarRetriever, cli *pilgrim_mock.CliFlagRetriever) {
			env.EXPECT().Driver().Return(pilgrim_conf.DbDriver_MSSQL, true)
			cli.EXPECT().Driver().Return(pilgrim_conf.DbDriver_MySQL, true) // This should be of highest priority
			cli.EXPECT().Url().Return("postgres://cli_host:5432/cli_segment1/cli_segment2?cli_arg1=cli_val1&cli_arg2=cli_val2", true)
		},
		func(env *pilgrim_mock.EnvVarRetriever, cli *pilgrim_mock.CliFlagRetriever) {
			ctx := pilgrim_conf.NewPilgrimContext(cli, env)

			assert.Equal(t, pilgrim_conf.DbDriver_MySQL, ctx.UrlParts().Driver)
		},
	)
}

func Test_PilgrimContext_EnvDriverOverridesEnvUrlDriver(t *testing.T) {
	runTest(
		func(env *pilgrim_mock.EnvVarRetriever, cli *pilgrim_mock.CliFlagRetriever) {
			env.EXPECT().Driver().Return(pilgrim_conf.DbDriver_MSSQL, true) // This should be highest priority
			env.EXPECT().Url().Return("postgres://env_host:5432", true)
		},
		func(env *pilgrim_mock.EnvVarRetriever, cli *pilgrim_mock.CliFlagRetriever) {
			ctx := pilgrim_conf.NewPilgrimContext(cli, env)

			assert.Equal(t, pilgrim_conf.DbDriver_MSSQL, ctx.UrlParts().Driver)
		},
	)
}

func Test_PilgrimContext_CliUrlDriverOverridesEnvDriver(t *testing.T) {
	runTest(
		func(env *pilgrim_mock.EnvVarRetriever, cli *pilgrim_mock.CliFlagRetriever) {
			env.EXPECT().Driver().Return(pilgrim_conf.DbDriver_Postgres, true)
			cli.EXPECT().Url().Return("mssql://cli_host:1433", true)
		},
		func(env *pilgrim_mock.EnvVarRetriever, cli *pilgrim_mock.CliFlagRetriever) {
			ctx := pilgrim_conf.NewPilgrimContext(cli, env)

			assert.Equal(t, pilgrim_conf.DbDriver_MSSQL, ctx.UrlParts().Driver)
		},
	)
}

func Test_PilgrimContext_CliDriverOverridesEnvDriver(t *testing.T) {
	runTest(
		func(env *pilgrim_mock.EnvVarRetriever, cli *pilgrim_mock.CliFlagRetriever) {
			env.EXPECT().Driver().Return(pilgrim_conf.DbDriver_MSSQL, true)
			cli.EXPECT().Driver().Return(pilgrim_conf.DbDriver_MariaDB, true)
		},
		func(env *pilgrim_mock.EnvVarRetriever, cli *pilgrim_mock.CliFlagRetriever) {
			ctx := pilgrim_conf.NewPilgrimContext(cli, env)

			assert.Equal(t, pilgrim_conf.DbDriver_MariaDB, ctx.UrlParts().Driver)
		},
	)
}

func Test_PilgrimContext_EnvDriverIsUsedIfNoCliDriverProvided(t *testing.T) {
	runTest(
		func(env *pilgrim_mock.EnvVarRetriever, cli *pilgrim_mock.CliFlagRetriever) {
			env.EXPECT().Driver().Return(pilgrim_conf.DbDriver_MSSQL, true)
		},
		func(env *pilgrim_mock.EnvVarRetriever, cli *pilgrim_mock.CliFlagRetriever) {
			ctx := pilgrim_conf.NewPilgrimContext(cli, env)

			assert.Equal(t, pilgrim_conf.DbDriver_MSSQL, ctx.UrlParts().Driver)
		},
	)
}

func Test_PilgrimContext_EnvUrlDriverIsNotUsedIfCliDriverOverrideProvided(t *testing.T) {
	runTest(
		func(env *pilgrim_mock.EnvVarRetriever, cli *pilgrim_mock.CliFlagRetriever) {
			env.EXPECT().Url().Return("mysql://localhost:3306", true)
			cli.EXPECT().Driver().Return(pilgrim_conf.DbDriver_MariaDB, true)
		},
		func(env *pilgrim_mock.EnvVarRetriever, cli *pilgrim_mock.CliFlagRetriever) {
			ctx := pilgrim_conf.NewPilgrimContext(cli, env)

			assert.Equal(t, pilgrim_conf.DbDriver_MariaDB, ctx.UrlParts().Driver)
		},
	)
}