package reddit

import (
	"net/http"
	"net/url"
	"os"
	"testing"

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

func TestWithHTTPClient(t *testing.T) {
	_, err := NewClient(nil, WithHTTPClient(nil))
	require.EqualError(t, err, "httpClient: cannot be nil")

	_, err = NewClient(nil, WithHTTPClient(&http.Client{}))
	require.NoError(t, err)
}

func TestFromEnv(t *testing.T) {
	os.Setenv("GO_REDDIT_CLIENT_ID", "id1")
	defer os.Unsetenv("GO_REDDIT_CLIENT_ID")

	os.Setenv("GO_REDDIT_CLIENT_SECRET", "secret1")
	defer os.Unsetenv("GO_REDDIT_CLIENT_SECRET")

	os.Setenv("GO_REDDIT_CLIENT_USERNAME", "username1")
	defer os.Unsetenv("GO_REDDIT_CLIENT_USERNAME")

	os.Setenv("GO_REDDIT_CLIENT_PASSWORD", "password1")
	defer os.Unsetenv("GO_REDDIT_CLIENT_PASSWORD")

	c, err := NewClient(nil, FromEnv)
	require.NoError(t, err)

	type values struct {
		id, secret, username, password string
	}

	expect := values{"id1", "secret1", "username1", "password1"}
	actual := values{c.ID, c.Secret, c.Username, c.Password}
	require.Equal(t, expect, actual)
}

func TestWithBaseURL(t *testing.T) {
	c, err := NewClient(nil, WithBaseURL(":"))
	urlErr, ok := err.(*url.Error)
	require.True(t, ok)
	require.Equal(t, "parse", urlErr.Op)

	baseURL := "http://localhost:8080"
	c, err = NewClient(nil, WithBaseURL(baseURL))
	require.NoError(t, err)
	require.Equal(t, baseURL, c.BaseURL.String())
}

func TestWithTokenURL(t *testing.T) {
	c, err := NewClient(nil, WithTokenURL(":"))
	urlErr, ok := err.(*url.Error)
	require.True(t, ok)
	require.Equal(t, "parse", urlErr.Op)

	tokenURL := "http://localhost:8080/api/v1/access_token"
	c, err = NewClient(nil, WithTokenURL(tokenURL))
	require.NoError(t, err)
	require.Equal(t, tokenURL, c.TokenURL.String())
}