package main

import (
	"slices"
	"strings"
	"testing"
)

func TestSubmodules(t *testing.T) {
	tests := []struct {
		name      string
		file      string
		subs      []Submodule
		has_error bool
	}{
		{
			name: "Empty submodules file",
			file: "",
			subs: []Submodule{},
		},
		{
			name: "Empty single submodule",
			file: "[submodule \"Foo\"]",
			subs: []Submodule{
				{Name: "Foo"},
			},
		},
		{
			name:      "Invalid submodule name",
			file:      "[submodule \"Foo']",
			has_error: true,
		},
		{
			name:      "Invalid submodule name",
			file:      "[submodule 'Foo']",
			has_error: true,
		},
		{
			name:      "Invalid submodule name",
			file:      "[submodule Foo]",
			has_error: true,
		},
		{
			name:      "Invalid submodule name",
			file:      "[submodul \"Foo\"]",
			has_error: true,
		},
		{
			name:      "Invalid submodule name",
			file:      "[submodule \"Foo\"",
			has_error: true,
		},
		{
			name:      "Gerbage input",
			file:      "asdf kjasf[d;fkl",
			has_error: true,
		},
		{
			name: "Submodule with one entry",
			file: "[submodule \"libfoo\"]\npath = foo\n\n",
			subs: []Submodule{
				{
					Name: "libfoo",
					Path: "foo",
				},
			},
		},
		/*
					{
						name: "Simple submodule",
						file: `[submodule "libfoo"]
			             path = include/foo
			             url = git://foo.com/git/lib.git

			      [submodule "libbar"]
			             path = include/bar
			             url = git://bar.com/git/lib.git`,

						subs: []Submodule{
							{
								Name: "libfoo",
								Path: "include/foo",
								Url: "git://foo.com/git/lib.git",
							},
							{
								Name: "libbar",
								Path: "include/bar",
								Url: "git://bar.com/git/lib.git",
							},
						},
					},
		*/
	}

	for _, test := range tests {
		t.Run(test.name, func(t *testing.T) {
			mods, err := ParseSubmodulesFile(strings.NewReader(test.file))
			if test.has_error {
				if err == nil {
					t.Error("Expected an error")
				}
			} else if err != nil {
				t.Error("unexpected error:", err)
			}
			if !slices.Equal(mods, test.subs) {
				t.Error("expected", test.subs, "but got", mods)
			}
		})
	}
}