package util

import (
	"errors"
	"path/filepath"
	"testing"

	"code.thetadev.de/TSGRain/WebUI/src/fixtures"
	"github.com/stretchr/testify/assert"
)

func TestDoesFileExist(t *testing.T) {
	fixtures.CdProjectRoot()

	type args struct {
		filepath string
	}
	tests := []struct {
		name string
		args args
		want bool
	}{
		{
			name: "exist",
			args: args{"go.mod"},
			want: true,
		},
		{
			name: "not_exist",
			args: args{"banana.mod"},
			want: false,
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			if got := DoesFileExist(tt.args.filepath); got != tt.want {
				t.Errorf("DoesFileExist() = %v, want %v", got, tt.want)
			}
		})
	}
}

func TestFindFile(t *testing.T) {
	testfiles := fixtures.GetTestfilesDir()

	//nolint:lll
	tests := []struct {
		name         string
		explicitPath string
		locations    []string
		endings      []string
		expect       string
		expectErr    error
	}{
		{
			name:         "locations",
			explicitPath: "",
			locations:    []string{filepath.Join(testfiles, "tsgrain_web")},
			endings:      []string{"yml", "toml"},
			expect:       filepath.Join(testfiles, "tsgrain_web.toml"),
			expectErr:    nil,
		},
		{
			name:         "locations_nf",
			explicitPath: "",
			locations:    []string{filepath.Join(testfiles, "banana")},
			endings:      []string{"yml", "toml"},
			expect:       "",
			expectErr:    errors.New("none of the following files found: src/fixtures/testfiles/banana.yml; src/fixtures/testfiles/banana.toml"),
		},
		{
			name:         "no_endings",
			explicitPath: "",
			locations:    []string{filepath.Join(testfiles, "banana"), filepath.Join(testfiles, "htpasswd")},
			endings:      nil,
			expect:       filepath.Join(testfiles, "htpasswd"),
			expectErr:    nil,
		},
		{
			name:         "no_endings_nf",
			explicitPath: "",
			locations:    []string{filepath.Join(testfiles, "banana"), filepath.Join(testfiles, "apple")},
			endings:      nil,
			expect:       "",
			expectErr:    errors.New("none of the following files found: src/fixtures/testfiles/banana; src/fixtures/testfiles/apple"),
		},
		{
			name:         "explicit",
			explicitPath: filepath.Join(testfiles, "tsgrain_web.toml"),
			locations:    []string{filepath.Join(testfiles, "banana")},
			endings:      []string{"yml", "toml"},
			expect:       filepath.Join(testfiles, "tsgrain_web.toml"),
			expectErr:    nil,
		},
		{
			name:         "explicit_nf",
			explicitPath: filepath.Join(testfiles, "banana.toml"),
			locations:    []string{filepath.Join(testfiles, "banana")},
			endings:      []string{"yml", "toml"},
			expect:       "",
			expectErr:    errors.New("file src/fixtures/testfiles/banana.toml not found"),
		},
	}

	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			fpath, err := FindFile(tt.explicitPath, tt.locations, tt.endings)
			assert.Equal(t, tt.expectErr, err)
			assert.Equal(t, tt.expect, fpath)
		})
	}
}