package org.cryptomator.ui.addvaultwizard;

import javax.inject.Inject;

import java.util.List;

import java.util.ResourceBundle;

@AddVaultWizardScoped

public class ReadmeGenerator {

// specs: https://web.archive.org/web/20190708132914/http://www.kleinlercher.at/tools/Windows_Protocols/Word2007RTFSpec9.pdf

private static final String RTF_HEADER = "{\\rtf1\\fbidis\\ansi\\uc0\\fs32\n";

private static final String RTF_FOOTER = "}";

private static final String HEADING = "\\fs40\\qc %s";

private static final String EMPTY_PAR = "";

private static final String DONT_PAR = "\\b %s";

private static final String IDENT_PAR = " %s";

private static final String HELP_URL = "{\\field{\\*\\fldinst HYPERLINK \"http://docs.cryptomator.org/\"}{\\fldrslt http://docs.cryptomator.org}}";

private final ResourceBundle resourceBundle;

@Inject

public ReadmeGenerator(ResourceBundle resourceBundle) {

this.resourceBundle = resourceBundle;

}

public String createVaultStorageLocationReadmeRtf() {

return createDocument(List.of( //

String.format(HEADING, resourceBundle.getString("addvault.new.readme.storageLocation.1")), //

resourceBundle.getString("addvault.new.readme.storageLocation.2"), //

EMPTY_PAR, //

String.format(DONT_PAR, resourceBundle.getString("addvault.new.readme.storageLocation.3")), //

String.format(IDENT_PAR, resourceBundle.getString("addvault.new.readme.storageLocation.4")), //

String.format(IDENT_PAR, resourceBundle.getString("addvault.new.readme.storageLocation.5")), //

EMPTY_PAR, //

resourceBundle.getString("addvault.new.readme.storageLocation.6"), //

String.format(IDENT_PAR, resourceBundle.getString("addvault.new.readme.storageLocation.7")), //

String.format(IDENT_PAR, resourceBundle.getString("addvault.new.readme.storageLocation.8")), //

String.format(IDENT_PAR, resourceBundle.getString("addvault.new.readme.storageLocation.9")), //

EMPTY_PAR, //

String.format(resourceBundle.getString("addvault.new.readme.storageLocation.10"), HELP_URL) //

));

}

public String createVaultAccessLocationReadmeRtf() {

return createDocument(List.of( //

String.format(HEADING, resourceBundle.getString("addvault.new.readme.accessLocation.1")), //

resourceBundle.getString("addvault.new.readme.accessLocation.2"), //

EMPTY_PAR, //

resourceBundle.getString("addvault.new.readme.accessLocation.3"), //

EMPTY_PAR, //

resourceBundle.getString("addvault.new.readme.accessLocation.4")));

}

// visible for testing

String createDocument(Iterable<String> paragraphs) {

StringBuilder sb = new StringBuilder(RTF_HEADER);

for (String p : paragraphs) {

sb.append("{\\sa80 ");

appendEscaped(sb, p);

sb.append("}\\par \n");

}

sb.append(RTF_FOOTER);

return sb.toString();

}

// visible for testing

String escapeNonAsciiChars(CharSequence input) {

StringBuilder sb = new StringBuilder();

appendEscaped(sb, input);

return sb.toString();

}

private void appendEscaped(StringBuilder sb, CharSequence input) {

input.chars().forEachOrdered(c -> {

if (c < 128) {

sb.append((char) c);

} else if (c < 0xFFFF) {

sb.append("\\u").append(c);

}

});

}

}