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88 lines
2.7 KiB
JavaScript
88 lines
2.7 KiB
JavaScript
"use strict";
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const Promise = require("bluebird");
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const fs = require("fs").promises;
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const path = require("path");
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const dateFns = require("date-fns");
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const slug = require("slug");
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const compareStrings = require("../compare-strings");
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let suffixRegex = /^(.+)\.js$/;
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let filenameRegex = /^(\d{4}-\d{2}-\d{2}_\d{2}-\d{2}-\d{2})_(.+)$/;
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let templateFolder = path.resolve(__dirname, "../templates");
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module.exports = function ({ configurationPath, configuration }) {
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let schemaUpdateFolder = path.resolve(path.dirname(configurationPath), configuration.schema.fs.root);
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return {
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create: function ({ description }) {
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return Promise.try(() => {
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let timestamp = dateFns.format(new Date(), "yyyy-MM-dd_hh-mm-ss");
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let destinationFilename = `${timestamp}_${slug(description)}.js`;
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let sourceTemplate = path.join(templateFolder, "schema-update.js");
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let destinationPath = path.join(schemaUpdateFolder, destinationFilename);
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return Promise.try(() => {
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return fs.copyFile(sourceTemplate, destinationPath);
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}).then(() => {
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return {
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statusMessage: `New schema update created at ${destinationPath}`
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};
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});
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});
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},
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getAll: function () {
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return Promise.try(() => {
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return fs.readdir(schemaUpdateFolder);
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}).then((schemaFiles) => {
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let seenDates = new Set();
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return schemaFiles
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.map((filename) => {
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let match = suffixRegex.exec(filename);
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if (match != null) {
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let basename = match[1];
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let parsed = filenameRegex.exec(basename);
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if (parsed != null) {
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let [ _, date, description ] = parsed;
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if (!seenDates.has(date)) {
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seenDates.add(date);
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return {
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filename: filename,
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timestamp: date,
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description: description
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};
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} else {
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// FIXME: Link to docs explaining this
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throw new Error(`Encountered timestamp prefix twice: ${date} -- this is not allowed, change one of the timestamps to indicate the desired order.`);
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}
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} else {
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// FIXME: Link to docs explaining this
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throw new Error(`Filename does not match the expected format: ${filename}`);
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}
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} else {
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throw new Error(`The schema folder must only contain .js files; encountered ${filename}`);
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}
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})
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.sort((a, b) => {
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return compareStrings(a.timestamp, b.timestamp);
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})
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.map((item) => {
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return {
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timestamp: item.timestamp, // NOTE: This is a unique sortable ID, that is used to identify the schema update in the internal schema state
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description: item.description,
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operations: require(path.join(schemaUpdateFolder, item.filename))
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};
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});
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});
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// FIXME: Error case handling
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}
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};
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};
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