package main

import (
	"os"
	"path"
	"sort"
	"testing"
)

func TestConfigTargets(t *testing.T) {
	cases := map[string]struct {
		setup func(*testing.T, string)
		given string
		want  []string
	}{
		"does not exist": {
			given: "x",
			want:  []string{"x"},
		},
		"one file": {
			setup: func(t *testing.T, d string) {
				os.WriteFile(path.Join(d, "x"), nil, os.ModePerm)
			},
			given: "x",
			want:  []string{"x"},
		},
		"two files": {
			setup: func(t *testing.T, d string) {
				os.WriteFile(path.Join(d, "x"), nil, os.ModePerm)
				os.WriteFile(path.Join(d, "x.todo.xyz"), nil, os.ModePerm)
			},
			given: "x",
			want:  []string{"x", "x.todo.xyz"},
		},
		"empty dir": {
			setup: func(t *testing.T, d string) {
				os.Mkdir(path.Join(d, "x"), os.ModePerm)
			},
			given: "x",
			want:  []string{"root.yaml"},
		},
		"dir": {
			setup: func(t *testing.T, d string) {
				os.Mkdir(path.Join(d, "x"), os.ModePerm)
				os.WriteFile(path.Join(d, "x", "a"), nil, os.ModePerm)
				os.WriteFile(path.Join(d, "x", "a.todo.xyz"), nil, os.ModePerm)
				os.WriteFile(path.Join(d, "x", "b"), nil, os.ModePerm)
			},
			given: "x",
			want:  []string{"a", "a.todo.xyz", "b"},
		},
	}

	for name, d := range cases {
		c := d
		t.Run(name, func(t *testing.T) {
			d := t.TempDir()
			if c.setup != nil {
				c.setup(t, d)
			}
			config := config{target: path.Join(d, c.given)}
			got := config.Targets()
			if len(got) != len(c.want) {
				t.Error(c.want, got)
			}

			for i := range got {
				got[i] = path.Base(got[i])
			}
			for i := range c.want {
				c.want[i] = path.Base(c.want[i])
			}
			sort.Strings(c.want)
			sort.Strings(got)

			for i := range got {
				if got[i] != c.want[i] {
					t.Error(i, c.want[i], got[i])
				}
			}
		})
	}
}