package config

import (
	"testing"

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

func TestLoadDefaults(t *testing.T) {
	cfg, err := Load("", "")
	require.NoError(t, err)
	assert.Equal(t, "GoCalGoo", cfg.App.Name)
	assert.Equal(t, 53682, cfg.OAuth.DefaultPort)
	assert.Equal(t, "primary", cfg.Google.DefaultCalendarID)
	assert.Equal(t, 8080, cfg.Server.Port)
	assert.NotEmpty(t, cfg.Google.Scopes)
}

func TestValidate(t *testing.T) {
	tests := []struct {
		name    string
		mutate  func(*Config)
		wantErr bool
	}{
		{
			name:    "valid config",
			mutate:  func(c *Config) {},
			wantErr: false,
		},
		{
			name: "missing credentials file",
			mutate: func(c *Config) {
				c.OAuth.ClientCredentialsFile = ""
			},
			wantErr: true,
		},
		{
			name: "missing token store",
			mutate: func(c *Config) {
				c.OAuth.TokenStoreFile = ""
			},
			wantErr: true,
		},
		{
			name: "empty scopes",
			mutate: func(c *Config) {
				c.Google.Scopes = nil
			},
			wantErr: true,
		},
		{
			name: "invalid port",
			mutate: func(c *Config) {
				c.Server.Port = 0
			},
			wantErr: true,
		},
	}
	for _, tc := range tests {
		t.Run(tc.name, func(t *testing.T) {
			cfg, err := Load("", "")
			require.NoError(t, err)
			tc.mutate(cfg)
			err = Validate(cfg)
			if tc.wantErr {
				assert.Error(t, err)
			} else {
				assert.NoError(t, err)
			}
		})
	}
}