package database

import (
	"testing"

	"github.com/stretchr/testify/assert"
)

func TestMustGetConnectionString(t *testing.T) {
	t.Setenv("DB_USER", "user")
	t.Setenv("DB_PASS", "pass")
	t.Setenv("DB_HOST", "host")
	t.Setenv("DB_PORT", "port")
	t.Setenv("DB_NAME", "name")

	connStr := mustGetConnectionString()
	assert.Equal(t, "postgres://user:pass@host:port/name?", connStr)
}

func TestMustGetConnectionStringNoSSL(t *testing.T) {
	t.Setenv("DB_USER", "user")
	t.Setenv("DB_PASS", "pass")
	t.Setenv("DB_HOST", "host")
	t.Setenv("DB_PORT", "port")
	t.Setenv("DB_NAME", "name")
	t.Setenv("DB_NOSSL", "1")

	connStr := mustGetConnectionString()
	assert.Equal(t, "postgres://user:pass@host:port/name?sslmode=disable", connStr)
}

func TestMustGetConnectionStringNoEnv(t *testing.T) {
	t.Setenv("DB_USER", "")
	t.Setenv("DB_PASS", "")
	t.Setenv("DB_HOST", "")
	t.Setenv("DB_PORT", "")
	t.Setenv("DB_NAME", "")

	assert.Panics(t, func() { mustGetConnectionString() })
}

func TestGetPoolConfig(t *testing.T) {
	t.Setenv("DB_USER", "user")
	t.Setenv("DB_PASS", "pass")
	t.Setenv("DB_HOST", "host")
	t.Setenv("DB_PORT", "5432")
	t.Setenv("DB_NAME", "name")

	config, err := getPoolConfig()
	assert.Nil(t, err)
	assert.Equal(t, config.ConnString(), mustGetConnectionString())
}

func TestGetPoolConfigInvalidPort(t *testing.T) {
	t.Setenv("DB_USER", "user")
	t.Setenv("DB_PASS", "pass")
	t.Setenv("DB_HOST", "host")
	t.Setenv("DB_PORT", "invalid_port")
	t.Setenv("DB_NAME", "name")

	_, err := getPoolConfig()
	assert.EqualError(t, err, "cannot parse `postgres://user:xxxxxx@host:invalid_port/name?`: failed to parse as URL (invalid port \":invalid_port\" after host)")
}

func TestMustGetPoolConfig(t *testing.T) {
	t.Setenv("DB_USER", "user")
	t.Setenv("DB_PASS", "pass")
	t.Setenv("DB_HOST", "host")
	t.Setenv("DB_PORT", "5432")
	t.Setenv("DB_NAME", "name")

	config := mustGetPoolConfig()
	assert.Equal(t, config.ConnString(), mustGetConnectionString())
}

func TestMustGetPoolConfigInvalidPort(t *testing.T) {
	t.Setenv("DB_USER", "user")
	t.Setenv("DB_PASS", "pass")
	t.Setenv("DB_HOST", "host")
	t.Setenv("DB_PORT", "invalid_port")
	t.Setenv("DB_NAME", "name")

	assert.Panics(t, func() { mustGetPoolConfig() })
}