/*
* Copyright (C) 2022 Brian Evans
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/
package main

import (
	"reflect"
	"testing"
)

func Test_WrapContent_Wrapped_Line_Length(t *testing.T) {
	type fields struct {
		WrappedContent []string
		RawContent     string
		Links          []string
		Location       Url
		ScrollPosition int
		FoundLinkLines []int
		SearchTerm     string
		SearchIndex    int
		FileType       string
		WrapWidth      int
		Color          bool
	}
	type args struct {
		width    int
		maxWidth int
		color    bool
	}

	// create a Url for use by the MakePage function
	url, _ := MakeUrl("gemini://rawtext.club")

	tests := []struct {
		name    string
		input   string
		expects []string
		args    args
	}{
		{
			"Short line that doesn't wrap",
			"0123456789\n",
			[]string{
				"0123456789",
				"",
			},
			args{
				10,
				10,
				false,
			},
		},
		{
			"multiple words should wrap at the right point",
			"01 345 789 123456789 123456789 123456789 123456789\n",
			[]string{
				"01 345 789",
				"123456789 ",
				"123456789 ",
				"123456789 ",
				"123456789",
				"",
			},
			args{
				10,
				10,
				false,
			},
		},
		{
			"Long line wrapped to 10 columns, leading spaces omitted when wrapping",
			"0123456789 123456789 123456789 123456789 123456789\n",
			[]string{
				"0123456789",
				"123456789 ",
				"123456789 ",
				"123456789 ",
				"123456789",
				"",
			},
			args{
				10,
				10,
				false,
			},
		},
		{
			"Intentional leading spaces aren't trimmed",
			"01 345\n 789 123456789\n",
			[]string{
				"01 345",
				" 789 ",
				"123456789",
				"",
			},
			args{
				10,
				10,
				false,
			},
		},
		{
			"Unicode line endings that should not wrap",
			"LF\u000A" +
				"CR+LF\u000D\u000A" +
				"NEL\u0085" +
				"LS\u2028" +
				"PS\u2029",
			[]string{
				"LF",
				"CR+LF",
				"NEL",
				"LS",
				"PS",
				"",
			},
			args{
				10,
				10,
				false,
			},
		},
	}
	for _, tt := range tests {
		t.Run(tt.name, func(t *testing.T) {
			p := MakePage(url, tt.input, []string{""})
			p.WrapContent(tt.args.width-1, tt.args.maxWidth, tt.args.color)
			if !reflect.DeepEqual(p.WrappedContent, tt.expects) {
				t.Errorf("Test failed - %s\nexpects %s\nactual  %s", tt.name, tt.expects, p.WrappedContent)
			}
		})
	}
}