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drafts.js
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drafts.js
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// General-purpose functional library.
// More info at https://ramdajs.com/
require('ramda.js');
/*
Functions for use specifically with the Drafts app.
Many of these enable working with Drafts scripting in a more functional manner.
*/
// #region Prompt
// Title, Message -> Prompt
const newPrompt = (t = "", m = "") =>
Object.assign(Prompt.create(), {title: t, message: m});
// Prompt, Button -> Prompt
const addButton = (p, b) => {p.addButton(b);return p;};
// Title, Buttons -> Prompt
const buttonPrompt = (t, bs) => bs.reduce(addButton, newPrompt(t));
// p = Prompt
// c = ["funcName", [arguments]]
const addControl = (p, c) => {
const func = c[0], args = c[1];
p[func](...args);
return p;
};
// Define a prompt in a object
// {
// title: "",
// message: "",
// controls: [
// ["funcName", [arguments]],
// ["funcName", [arguments]]
// ]
// }
const customPrompt = p =>
p.controls.reduce(addControl, newPrompt(p.title, p.message));
// (Title, Message) -> String
const inputString = (t, m) => {
const pObj = {
title: t,
message: m,
controls: [
['addTextField', ['i', 'Input', '', {wantsFocus: true}]],
['addButton', ['OK']]
]
};
const p = customPrompt(pObj);
p.isCancellable = false;
return p.show()
? p.fieldValues['i']
: '';
};
// Takes in a custom prompt definition, prompts for input, and creates new template tags (prefixed with 'prompt_') for each field in the prompt.
// Returns false if the prompt is canceled, true otherwise.
const promptForTags = promptDef => {
const p = customPrompt(promptDef);
if (!p.show()) return false;
const setTag = (value, key) => draft.setTemplateTag(`prompt_${key}`, value);
R.forEachObjIndexed(setTag, p.fieldValues);
return true;
};
// prompts for an input and
const inputTag = (title, tag, type = 'text') => {
let controls = [];
switch (type){
case 'date':
controls.push(['addDatePicker', [tag, '', new Date(), {'mode': 'date'}]]);
break;
case 'text':
default:
controls.push(['addTextField', [tag, '', '', {'wantsFocus': true}]]);
}
controls.push(['addButton', ['OK']]);
if (promptForTags({title, controls})){
if (type == 'date'){
const tagName = `prompt_${tag}`;
const d = new Date(draft.getTemplateTag(tagName));
draft.setTemplateTag(tagName, shortDate(d));
}
editor.activate();
}
else {
context.cancel();
editor.activate();
}
}
// #region CallbackURL
// URL -> CallbackURL
const callbackObj = url =>
Object.assign(CallbackURL.create(), {baseURL: url});
// CallbackURL, paramater array -> CallbackURL
const addParam = (cb, v) => {
cb.addParameter(...v);
return cb;
};
// URL, Paramaters -> CallbackURL
const callback = (url, params) =>
params.reduce(addParam, callbackObj(url));
// #region Draft
const addTag = (d, t) => {d.addTag(t);d.update();return d};
// Content, Grammar -> new draft
const newDraft = (c, g = null, tags = []) => {
let d = tags.reduce(addTag, Draft.create());
d.content = c;
d.languageGrammar = g;
d.update();
return d;
};
// Content, Grammar, Tags -> new draft
const loadNewDraft = (c, g, t) => loadDraft(newDraft(c, g, t));
// Load an existing draft into the editor
// and update the draft variable
const loadDraft = d => {
if (d) editor.load((draft = d));
return d;
};
const setTemplateTags = (d, tags) => {
const setTag = (v,t) => d.setTemplateTag(t,v);
R.forEachObjIndexed(setTag, tags);
};
const templateDraft = (tpl, props) => {
let d = Draft.create();
setTemplateTags(d, props);
d.content = d.processTemplate(tpl);
return d;
};
const cleanSlate = () => {
app.hideDraftList();
editor.new();
editor.deactivate();
};
// #region Selected Text
// Return the selected text if any
// Otherwise, select and return entire draft contents
const getSelectedOrAllText = () => {
const
r = editor.getSelectedRange(),
s = r[1] > 0
? editor.getSelectedText()
: draft.content,
p = r[1] === 0 ? 0 : r[0];
// update select range
editor.setSelectedRange(p, s.length);
return s;
};
// Wraps a selection with the start and end strings
// If no selection, insert start/end and put cursor
// in between.
const wrapSelection = (start, end) => {
const
text = editor.getSelectedText(),
pos = editor.getSelectedRange()[0],
newText = text.length
? start + text + end
: start + end,
newPos = text.length
? pos + newText.length
: pos + start.length;
editor.setSelectedText(newText);
editor.setSelectedRange(newPos, 0);
}
const getSelectedLines = () => {
const
// grab selection ranges and text
selRange = editor.getSelectedRange(),
lnRange = editor.getSelectedLineRange(),
lnText = editor.getTextInRange(...lnRange),
trailingNewline = lnText.endsWith("\n"),
// ignore trailing newline from getSelectedLineRange if present
lines = splitLines(trailingNewline ? lnText.slice(0, -1) : lnText);
return lines;
}
const setSelectedLines = lines => {
const
lnRange = editor.getSelectedLineRange(),
lnText = editor.getTextInRange(...lnRange),
trailingNewline = lnText.endsWith("\n"),
newText = joinLines(lines) + (trailingNewline ? '\n' : ''),
newStart = lnRange[0],
newLen = newText.length;
editor.setTextInRange(...lnRange, newText);
editor.setSelectedRange(newStart, newLen);
}
//#region Miscellaneous
const csvToObj = (csv, sep = ',') => {
const
unquote = s => s.replace(/^"?(.*?)"?$/, '$1'),
csvSplit = s => s.split(sep).map(unquote),
lines = csv.split('\n'),
headers = csvSplit(lines[0]),
csvZip = R.zipObj(headers),
result = lines.slice(1).reduce(
(ls,l) => {
ls.push(csvZip(csvSplit(l)));
return ls;
},[]);
return result;
}
const parseJsonDraft = R.pipe(
R.prop('content'),
R.split('\n'),
R.drop(1), // comment title
R.join('\n'),
JSON.parse
);
const jsonDraftToObjWithId = d => {
let obj = parseJsonDraft(d);
obj['id'] = d.uuid;
return obj;
};
const jsonDraftIdToObj = id => {
let d = Draft.find(id);
return parseJsonDraft(d);
};
const readLib = path => {
const
fm = FileManager.createCloud(),
fullPath = `Library/Scripts/${path}`,
output = fm.readString(fullPath);
return R.defaultTo('', output);
};
const dataToJS = R.pipe(
R.toPairs,
R.map(p => `const ${p[0]} = ${JSON.stringify(p[1])};`),
R.join('\n')
);
const isEmptyOrNil = R.anyPass([R.isEmpty, R.isNil]);
const saveConfig = (name, config) => {
const fm = FileManager.createLocal();
fm.writeString(`/${name}.json`, JSON.stringify(config));
}
const loadConfig = name => {
const
parseConfig = R.pipe(
R.when(isEmptyOrNil, R.always('{}')),
JSON.parse
),
fm = FileManager.createLocal(),
config = fm.readString(`/${name}.json`);
return parseConfig(config);
}
const previewHtml = html => {
const p = HTMLPreview.create();
return p.show(html);
}
const previewHtmlDraft = d => previewHtml(d.content);
const dropFirstLine = R.pipe(
R.split('\n'),
R.drop(1),
R.join('\n')
);
// lines :: String -> [String]
const splitLines = s => s.split(/[\r\n]/);
// unlines :: [String] -> String
const joinLines = xs => xs.join('\n');
//#region Date functions
const shortDate = d => strftime(d, '%Y-%m-%d');
const todayShort = () => shortDate(Date.today());
const addMonths = (date, months) => {
let future = new Date(date);
future.setMonth(date.getMonth() + +months);
if (future.getDate() != date.getDate()) {
future.setDate(0);
}
return future;
};
// accepts a date and an offset (ex: +3w, -2d, +1m)
// returns a new date adjusted by the offset
const offsetDate = (date, offset) => {
let d = new Date(date);
let offsetRegex = /(\+|-)(\d+)(d|w|m)/;
let match = offset.match(offsetRegex);
let multiplier = (match[1] == "+" ? 1 : -1);
if (match[3] == "d") {
d.setDate(d.getDate() + multiplier * parseInt(match[2]));
}
else if (match[3] == "w") {
d.setDate(d.getDate() + multiplier * 7 * parseInt(match[2]));
}
else if (match[3] == "m") {
d = addMonths(d, multiplier * parseInt(match[2]));
}
return d;
};
//#region Mustache functions
// Mustache functions below based on work by Peter Davison-Reiber
// https://polymaths.blog/2020/12/mustache-prompt-for-drafts
// Prompt for input to replace mustache-based variables in
// the supplied text and return the updated text
const mustachePrompt = text => {
const vars = mustacheVars(text);
let output = null;
if (Object.keys(vars).length == 0) {
// Nothing to process
output = text;
}
else {
const p = variablePrompt(vars);
if (p.show()){
const data = promptDataForVars(p, vars);
const preparedText = replaceVariables(vars, text);
const template = MustacheTemplate.createWithTemplate(preparedText);
output = template.render(data);
}
else {
context.cancel('Variable prompt canceled');
}
}
return output;
};
// Extract mustache variables from input text
const mustacheVars = text => {
const varRegex = /{{((?:(date|bool):)?(#|^)?(\w+)\??([+|-]\d+[d|w|m])?)}}/g;
const varMatches = text.matchAll(varRegex);
// generate a mustache-compatible key without our extensions (type, offset)
const extractKeyName = instance => {
const tokenizeOffset = R.pipe(
R.replace('+', '_offset_forward_'),
R.replace('-', '_offset_backwards_')
);
let key = instance.data;
if (instance.type){
key = key.replace(`${instance.type}:`, '');
}
if (instance.offset){
key = key.replace(instance.offset, tokenizeOffset(instance.offset));
}
return key;
};
// create an instance object based on match groups from regex
const getInstance = match => {
let instance = {
'string': match[0], // full match
'data': match[1], // data inside {{ }}
'type': match[2],
'modifier': match[3],
'name': match[4],
'offset': match[5]
};
instance['key'] = extractKeyName(instance);
return instance;
};
let vars = {};
for (match of varMatches) {
let instance = getInstance(match);
vars[instance.name] ??= {'instances': []}; // create variable entry if needed
vars[instance.name].instances.push(instance);
vars[instance.name].type ??= instance.type; // set type if not already set
vars[instance.name].modifier ??= instance.modifier; // set modifier if not already set
}
return vars;
};
// Create a prompt to collect data for a number of variables
// use the 'type' property on a variable to use the most
// appropriate control for intput
const variablePrompt = vars => {
const p = Prompt.create();
Object.entries(vars).forEach(([name, variable]) => {
if (variable.type == "date") {
p.addDatePicker(name, name, new Date(), {mode: "date"});
}
else if (variable.type == "bool") {
p.addSwitch(name, name, false);
}
else {
p.addTextField(name, name, "");
}
});
p.addButton("OK");
return p;
};
// Generate data based on prompt input for a set of variables
const promptDataForVars = (p, vars) => {
let data = {};
for (key in p.fieldValues) {
let fieldValue = p.fieldValues[key];
if (fieldValue instanceof Date) {
data[key] = shortDate(fieldValue);
vars[key].instances.forEach(instance => {
// for instances with offset dates, calculate offset date
if (instance.offset){
const newDate = offsetDate(fieldValue, instance.offset);
data[instance.key] = shortDate(newDate);
}
});
}
else if ((typeof fieldValue == 'string') &&
fieldValue.includes(',') &&
(vars[key].modifier == '#')) {
// process it as a comma separated list
data[key] = fieldValue.split(',').map(s => s.trim());
}
else {
data[key] = fieldValue;
}
}
return data;
};
// replace variables with their sanitized key names
// in preparation for processing as a mustache template
const replaceVariables = (vars, text) => {
let output = text;
Object.values(vars).forEach(variable => {
Object.values(variable.instances).forEach( instance => {
output = output.replace(instance.string, `{{${instance.key}}}`);
});
});
return output;
}