// Copyright 2016 - 2023 The excelize Authors. All rights reserved. Use of
// this source code is governed by a BSD-style license that can be found in
// the LICENSE file.
//
// Package excelize providing a set of functions that allow you to write to and
// read from XLAM / XLSM / XLSX / XLTM / XLTX files. Supports reading and
// writing spreadsheet documents generated by Microsoft Excel™ 2007 and later.
// Supports complex components by high compatibility, and provided streaming
// API for generating or reading data from a worksheet with huge amounts of
// data. This library needs Go version 1.16 or later.

package excelize

import (
	"encoding/xml"
	"path/filepath"
	"strings"
	"testing"

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

func TestAddComment(t *testing.T) {
	f, err := prepareTestBook1()
	if !assert.NoError(t, err) {
		t.FailNow()
	}

	s := strings.Repeat("c", TotalCellChars+1)
	assert.NoError(t, f.AddComment("Sheet1", Comment{Cell: "A30", Author: s, Text: s, Runs: []RichTextRun{{Text: s}, {Text: s}}}))
	assert.NoError(t, f.AddComment("Sheet2", Comment{Cell: "B7", Author: "Excelize", Text: s[:TotalCellChars-1], Runs: []RichTextRun{{Text: "Excelize: ", Font: &Font{Bold: true}}, {Text: "This is a comment."}}}))

	// Test add comment on not exists worksheet
	assert.EqualError(t, f.AddComment("SheetN", Comment{Cell: "B7", Author: "Excelize", Runs: []RichTextRun{{Text: "Excelize: ", Font: &Font{Bold: true}}, {Text: "This is a comment."}}}), "sheet SheetN does not exist")
	// Test add comment on with illegal cell reference
	assert.EqualError(t, f.AddComment("Sheet1", Comment{Cell: "A", Author: "Excelize", Runs: []RichTextRun{{Text: "Excelize: ", Font: &Font{Bold: true}}, {Text: "This is a comment."}}}), newCellNameToCoordinatesError("A", newInvalidCellNameError("A")).Error())
	comments, err := f.GetComments("Sheet1")
	assert.NoError(t, err)
	assert.Len(t, comments, 2)
	comments, err = f.GetComments("Sheet2")
	assert.NoError(t, err)
	assert.Len(t, comments, 1)
	assert.NoError(t, f.SaveAs(filepath.Join("test", "TestAddComments.xlsx")))

	f.Comments["xl/comments2.xml"] = nil
	f.Pkg.Store("xl/comments2.xml", []byte(xml.Header+`<comments xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main"><authors><author>Excelize: </author></authors><commentList><comment ref="B7" authorId="0"><text><t>Excelize: </t></text></comment></commentList></comments>`))
	comments, err = f.GetComments("Sheet1")
	assert.NoError(t, err)
	assert.Len(t, comments, 2)
	comments, err = f.GetComments("Sheet2")
	assert.NoError(t, err)
	assert.Len(t, comments, 1)
	comments, err = NewFile().GetComments("Sheet1")
	assert.NoError(t, err)
	assert.Len(t, comments, 0)

	// Test add comments with invalid sheet name
	assert.EqualError(t, f.AddComment("Sheet:1", Comment{Cell: "A1", Author: "Excelize", Text: "This is a comment."}), ErrSheetNameInvalid.Error())

	// Test add comments with unsupported charset
	f.Comments["xl/comments2.xml"] = nil
	f.Pkg.Store("xl/comments2.xml", MacintoshCyrillicCharset)
	_, err = f.GetComments("Sheet2")
	assert.EqualError(t, err, "XML syntax error on line 1: invalid UTF-8")

	// Test add comments with unsupported charset
	f.Comments["xl/comments2.xml"] = nil
	f.Pkg.Store("xl/comments2.xml", MacintoshCyrillicCharset)
	assert.EqualError(t, f.AddComment("Sheet2", Comment{Cell: "A30", Text: "Comment"}), "XML syntax error on line 1: invalid UTF-8")

	// Test add comments with unsupported charset style sheet
	f.Styles = nil
	f.Pkg.Store(defaultXMLPathStyles, MacintoshCyrillicCharset)
	assert.EqualError(t, f.AddComment("Sheet2", Comment{Cell: "A30", Text: "Comment"}), "XML syntax error on line 1: invalid UTF-8")

	// Test get comments on not exists worksheet
	comments, err = f.GetComments("SheetN")
	assert.Len(t, comments, 0)
	assert.EqualError(t, err, "sheet SheetN does not exist")
}

func TestDeleteComment(t *testing.T) {
	f, err := prepareTestBook1()
	if !assert.NoError(t, err) {
		t.FailNow()
	}

	assert.NoError(t, f.AddComment("Sheet2", Comment{Cell: "A40", Text: "Excelize: This is a comment1."}))
	assert.NoError(t, f.AddComment("Sheet2", Comment{Cell: "A41", Runs: []RichTextRun{{Text: "Excelize: ", Font: &Font{Bold: true}}, {Text: "This is a comment2."}}}))
	assert.NoError(t, f.AddComment("Sheet2", Comment{Cell: "C41", Runs: []RichTextRun{{Text: "Excelize: ", Font: &Font{Bold: true}}, {Text: "This is a comment3."}}}))
	assert.NoError(t, f.AddComment("Sheet2", Comment{Cell: "C41", Runs: []RichTextRun{{Text: "Excelize: ", Font: &Font{Bold: true}}, {Text: "This is a comment3-1."}}}))
	assert.NoError(t, f.AddComment("Sheet2", Comment{Cell: "C42", Runs: []RichTextRun{{Text: "Excelize: ", Font: &Font{Bold: true}}, {Text: "This is a comment4."}}}))
	assert.NoError(t, f.AddComment("Sheet2", Comment{Cell: "C41", Runs: []RichTextRun{{Text: "Excelize: ", Font: &Font{Bold: true}}, {Text: "This is a comment2."}}}))

	assert.NoError(t, f.DeleteComment("Sheet2", "A40"))

	comments, err := f.GetComments("Sheet2")
	assert.NoError(t, err)
	assert.Len(t, comments, 5)

	comments, err = NewFile().GetComments("Sheet1")
	assert.NoError(t, err)
	assert.Len(t, comments, 0)

	// Test delete comment with invalid sheet name
	assert.EqualError(t, f.DeleteComment("Sheet:1", "A1"), ErrSheetNameInvalid.Error())
	// Test delete all comments in a worksheet
	assert.NoError(t, f.DeleteComment("Sheet2", "A41"))
	assert.NoError(t, f.DeleteComment("Sheet2", "C41"))
	assert.NoError(t, f.DeleteComment("Sheet2", "C42"))
	comments, err = f.GetComments("Sheet2")
	assert.NoError(t, err)
	assert.EqualValues(t, 0, len(comments))
	// Test delete comment on not exists worksheet
	assert.EqualError(t, f.DeleteComment("SheetN", "A1"), "sheet SheetN does not exist")
	// Test delete comment with worksheet part
	f.Pkg.Delete("xl/worksheets/sheet1.xml")
	assert.NoError(t, f.DeleteComment("Sheet1", "A22"))

	f.Comments["xl/comments2.xml"] = nil
	f.Pkg.Store("xl/comments2.xml", MacintoshCyrillicCharset)
	assert.EqualError(t, f.DeleteComment("Sheet2", "A41"), "XML syntax error on line 1: invalid UTF-8")
}

func TestDecodeVMLDrawingReader(t *testing.T) {
	f := NewFile()
	path := "xl/drawings/vmlDrawing1.xml"
	f.Pkg.Store(path, MacintoshCyrillicCharset)
	_, err := f.decodeVMLDrawingReader(path)
	assert.EqualError(t, err, "XML syntax error on line 1: invalid UTF-8")
}

func TestCommentsReader(t *testing.T) {
	f := NewFile()
	// Test read comments with unsupported charset
	path := "xl/comments1.xml"
	f.Pkg.Store(path, MacintoshCyrillicCharset)
	_, err := f.commentsReader(path)
	assert.EqualError(t, err, "XML syntax error on line 1: invalid UTF-8")
}

func TestCountComments(t *testing.T) {
	f := NewFile()
	f.Comments["xl/comments1.xml"] = nil
	assert.Equal(t, f.countComments(), 1)
}