stylus/backup/fileSaveLoad.js

291 lines
9.4 KiB
JavaScript

'use strict';
const STYLISH_DUMP_FILE_EXT = '.txt';
const STYLUS_BACKUP_FILE_EXT = '.json';
function importFromFile({fileTypeFilter, file} = {}) {
return new Promise(resolve => {
const fileInput = document.createElement('input');
if (file) {
readFile();
return;
}
fileInput.style.display = 'none';
fileInput.type = 'file';
fileInput.accept = fileTypeFilter || STYLISH_DUMP_FILE_EXT;
fileInput.acceptCharset = 'utf-8';
document.body.appendChild(fileInput);
fileInput.initialValue = fileInput.value;
fileInput.onchange = readFile;
fileInput.click();
function readFile() {
if (file || fileInput.value !== fileInput.initialValue) {
file = file || fileInput.files[0];
if (file.size > 100*1000*1000) {
console.warn("100MB backup? I don't believe you.");
importFromString('').then(resolve);
return;
}
document.body.style.cursor = 'wait';
const fReader = new FileReader();
fReader.onloadend = event => {
fileInput.remove();
importFromString(event.target.result).then(numStyles => {
document.body.style.cursor = '';
resolve(numStyles);
});
};
fReader.readAsText(file, 'utf-8');
}
}
});
}
function importFromString(jsonString) {
const json = runTryCatch(() => Array.from(JSON.parse(jsonString))) || [];
const oldStyles = json.length && deepCopyStyles();
const oldStylesByName = json.length && new Map(
oldStyles.map(style => [style.name.trim(), style]));
const stats = {
added: {names: [], ids: [], legend: 'added'},
unchanged: {names: [], ids: [], legend: 'identical skipped'},
metaAndCode: {names: [], ids: [], legend: 'updated both meta info and code'},
metaOnly: {names: [], ids: [], legend: 'updated meta info'},
codeOnly: {names: [], ids: [], legend: 'updated code'},
invalid: {names: [], legend: 'invalid skipped'},
};
let index = 0;
return new Promise(proceed);
function proceed(resolve) {
while (index < json.length) {
const item = json[index++];
if (!item || !item.name || !item.name.trim() || typeof item != 'object'
|| (item.sections && !(item.sections instanceof Array))) {
stats.invalid.names.push(`#${index}: ${limitString(item && item.name || '')}`);
continue;
}
item.name = item.name.trim();
const byId = (cachedStyles.byId.get(item.id) || {}).style;
const byName = oldStylesByName.get(item.name);
const oldStyle = byId && byId.name.trim() == item.name || !byName ? byId : byName;
if (oldStyle == byName && byName) {
item.id = byName.id;
}
const oldStyleKeys = oldStyle && Object.keys(oldStyle);
const metaEqual = oldStyleKeys &&
oldStyleKeys.length == Object.keys(item).length &&
oldStyleKeys.every(k => k == 'sections' || oldStyle[k] === item[k]);
const codeEqual = oldStyle && styleSectionsEqual(oldStyle, item);
if (metaEqual && codeEqual) {
stats.unchanged.names.push(oldStyle.name);
stats.unchanged.ids.push(oldStyle.id);
continue;
}
saveStyle(Object.assign(item, {
reason: 'import',
notify: false,
})).then(style => {
setTimeout(proceed, 0, resolve);
if (!oldStyle) {
stats.added.names.push(style.name);
stats.added.ids.push(style.id);
}
else if (!metaEqual && !codeEqual) {
stats.metaAndCode.names.push(reportNameChange(oldStyle, style));
stats.metaAndCode.ids.push(style.id);
}
else if (!codeEqual) {
stats.codeOnly.names.push(style.name);
stats.codeOnly.ids.push(style.id);
}
else {
stats.metaOnly.names.push(reportNameChange(oldStyle, style));
stats.metaOnly.ids.push(style.id);
}
});
return;
}
done(resolve);
}
function done(resolve) {
const numChanged = stats.metaAndCode.names.length +
stats.metaOnly.names.length +
stats.codeOnly.names.length +
stats.added.names.length;
Promise.resolve(numChanged && refreshAllTabs()).then(() => {
scrollTo(0, 0);
const report = Object.keys(stats)
.filter(kind => stats[kind].names.length)
.map(kind => `<details data-id="${kind}">
<summary><b>${stats[kind].names.length} ${stats[kind].legend}</b></summary>
<small>` + stats[kind].names.map((name, i) =>
`<div data-id="${stats[kind].ids[i]}">${name}</div>`).join('') + `
</small>
</details>`)
.join('');
messageBox({
title: 'Finished importing styles',
contents: report || 'Nothing was changed.',
buttons: [t('confirmOK'), numChanged && t('undo')],
onshow: bindClick,
}).then(({button, enter, esc}) => {
if (button == 1) {
undo();
}
});
resolve(numChanged);
});
}
function undo() {
const oldStylesById = new Map(oldStyles.map(style => [style.id, style]));
const newIds = [
...stats.metaAndCode.ids,
...stats.metaOnly.ids,
...stats.codeOnly.ids,
...stats.added.ids,
];
index = 0;
return new Promise(undoNextId)
.then(refreshAllTabs)
.then(() => messageBox({
title: 'Import has been undone',
contents: newIds.length + ' styles were reverted.',
buttons: [t('confirmOK')],
}));
function undoNextId(resolve) {
if (index == newIds.length) {
resolve();
return;
}
const id = newIds[index++];
deleteStyle(id, {notify: false}).then(id => {
const oldStyle = oldStylesById.get(id);
if (oldStyle) {
saveStyle(Object.assign(oldStyle, {
reason: 'undoImport',
notify: false,
}))
.then(() => setTimeout(undoNextId, 0, resolve));
} else {
setTimeout(undoNextId, 0, resolve);
}
});
}
}
function bindClick(box) {
for (let block of $$('details')) {
if (block.dataset.id != 'invalid') {
block.style.cursor = 'pointer';
block.onclick = event => {
const styleElement = $(`[style-id="${event.target.dataset.id}"]`);
if (styleElement) {
scrollElementIntoView(styleElement);
animateElement(styleElement, {className: 'highlight'});
}
};
}
}
}
function deepCopyStyles() {
const clonedStyles = [];
for (let style of cachedStyles.list || []) {
style = Object.assign({}, style);
style.sections = style.sections.slice();
for (let i = 0, section; (section = style.sections[i]); i++) {
const copy = style.sections[i] = Object.assign({}, section);
for (let propName in copy) {
const prop = copy[propName];
if (prop instanceof Array) {
copy[propName] = prop.slice();
}
}
}
clonedStyles.push(style);
}
return clonedStyles;
}
function limitString(s, limit = 100) {
return s.length <= limit ? s : s.substr(0, limit) + '...';
}
function reportNameChange(oldStyle, newStyle) {
return newStyle.name != oldStyle.name
? oldStyle.name + ' —> ' + newStyle.name
: oldStyle.name;
}
}
$('#file-all-styles').onclick = () => {
getStylesSafe().then(styles => {
const text = JSON.stringify(styles, null, '\t');
const fileName = generateFileName();
const url = 'data:text/plain;charset=utf-8,' + encodeURIComponent(text);
// for long URLs; https://github.com/schomery/stylish-chrome/issues/13#issuecomment-284582600
fetch(url)
.then(res => res.blob())
.then(blob => {
let a = document.createElement('a');
a.setAttribute('download', fileName);
a.setAttribute('href', URL.createObjectURL(blob));
a.dispatchEvent(new MouseEvent('click'));
});
});
function generateFileName() {
const today = new Date();
const dd = ('0' + today.getDate()).substr(-2);
const mm = ('0' + (today.getMonth() + 1)).substr(-2);
const yyyy = today.getFullYear();
return `stylus-${mm}-${dd}-${yyyy}${STYLUS_BACKUP_FILE_EXT}`;
}
};
$('#unfile-all-styles').onclick = () => {
importFromFile({fileTypeFilter: STYLUS_BACKUP_FILE_EXT});
};
Object.assign(document.body, {
ondragover(event) {
const hasFiles = event.dataTransfer.types.includes('Files');
event.dataTransfer.dropEffect = hasFiles || event.target.type == 'search' ? 'copy' : 'none';
this.classList.toggle('dropzone', hasFiles);
if (hasFiles) {
event.preventDefault();
clearTimeout(this.fadeoutTimer);
this.classList.remove('fadeout');
}
},
ondragend(event) {
animateElement(this, {className: 'fadeout'}).then(() => {
this.style.animationDuration = '';
this.classList.remove('dropzone');
});
},
ondragleave(event) {
// Chrome sets screen coords to 0 on Escape key pressed or mouse out of document bounds
if (!event.screenX && !event.screenX) {
this.ondragend();
}
},
ondrop(event) {
this.ondragend();
if (event.dataTransfer.files.length) {
event.preventDefault();
importFromFile({file: event.dataTransfer.files[0]});
}
},
});