chore: add script for automatic changelog generation

.npmignore

@@ -31,4 +31,5 @@ scratch/
 docs/html/
 dev/
 
-.travis/**/*
+.travis/**/*
+generate_changelog.js

generate_changelog.js

@@ -0,0 +1,195 @@
+"use strict";
+
+const _ = require("lodash");
+const request = require("request");
+const fs = require("fs");
+const path = require("path");
+require("colors");
+
+const argv = process.argv;
+if (argv.length < 3 || argv.length > 4) {
+	console.error(`Incorrect usage. You need to pass the milestone and optionally the Authorization token.\n`.red +
+		`### Example:
+node generate_changelog.js 6.2.2 2d2156c261bb1494f7a6e22f11fa446c7ca0e6b7\n`.yellow);
+	process.exit(127);
+}
+
+const selectedMilestone = process.argv[2];
+const token = process.argv[3] || process.env.NS_CLI_CHANGELOG_AUTHORIZATION;
+if (!token) {
+	console.error(`Unable to find Authorization token.\n`.red +
+		`You must either set NS_CLI_CHANGELOG_AUTHORIZATION environment variable or pass the token as an argument to the script:\n`.yellow +
+		`node generate_changelog.js 6.2.2 2d2156c261bb1494f7a6e22f11fa446c7ca0e6b7\n`.green);
+	process.exit(127);
+}
+
+const sendRequest = (query) => {
+	return new Promise((resolve, reject) => {
+		request.post("https://api.github.com/graphql", {
+			headers: {
+				"Accept": "application/json",
+				"Authorization": `Bearer ${token}`,
+				"User-Agent": "NativeScript CLI Changelog Generator"
+			},
+			body: JSON.stringify(query),
+			followAllRedirects: true
+		}, (err, response, body) => {
+			if (err) {
+				reject(err);
+				return;
+			}
+			resolve(JSON.parse(body));
+		});
+	});
+};
+
+const getMilestonesInfoQuery = {
+	query: `{
+	repository(owner:"NativeScript", name:"nativescript-cli") {
+		milestones(first: 100, states: OPEN) {
+			nodes {
+				number
+				id
+				title
+				url
+			}
+		}
+	}
+}`
+};
+
+sendRequest(getMilestonesInfoQuery)
+	.then(result => {
+		const milestones = result && result.data && result.data.repository && result.data.repository.milestones && result.data.repository.milestones.nodes || [];
+		const matchingMilestone = _.find(milestones, m => m.title === selectedMilestone);
+		if (!matchingMilestone) {
+			throw new Error(`Unable to find milestone ${selectedMilestone} in the milestones. Current milestones info is: ${JSON.stringify(milestones, null, 2)}`);
+		}
+		return matchingMilestone.number;
+	})
+	.then((milestone) => {
+		const getItemsForMilestoneQuery = {
+			query: `{
+	repository(owner:"NativeScript", name:"nativescript-cli") {
+		milestone(number: ${milestone}) {
+			number
+			id
+			issuePrioritiesDebug
+			url
+			issues(first: 100) {
+				nodes {
+					title
+					url
+					number
+					labels(first:100) {
+						edges {
+							node {
+								name
+							}
+						}
+					}
+					projectCards(first: 100) {
+						nodes {
+							column {
+								name
+							}
+							project {
+								name
+								number
+							}
+							state
+						}
+					}
+				}
+			}
+		}
+	}
+}`
+		};
+		return sendRequest(getItemsForMilestoneQuery);
+	})
+	.then((milestoneQueryResult) => {
+		const issues = (milestoneQueryResult && milestoneQueryResult.data && milestoneQueryResult.data.repository &&
+			milestoneQueryResult.data.repository.milestone && milestoneQueryResult.data.repository.milestone.issues &&
+			milestoneQueryResult.data.repository.milestone.issues.nodes) || [];
+		const finalIssuesForChangelog = [];
+		issues.forEach((issue) => {
+			const labels = ((issue.labels && issue.labels.edges) || []).map((lblObj) => lblObj && lblObj.node && lblObj.node.name);
+			const isFeature = labels.indexOf("feature") !== -1;
+			const isBug = labels.indexOf("bug") !== -1;
+			const shouldBeSkipped = labels.indexOf("no-changelog") !== -1;
+			if (isFeature && isBug) {
+				console.error(`The item '${issue.title}' has both bug and feature label. Clear one of them and try again.`.red);
+				process.exit(1);
+			} else if (shouldBeSkipped) {
+				console.log(`Item ${issue && issue.url}(${issue && issue.title}) will not be included in changelog as it has no-changelog label`.yellow);
+			} else {
+				// check if we have resolved it:
+				const columns = (issue && issue.projectCards && issue.projectCards.nodes || []).map(c => c && c.column && c.column.name);
+				// There shouldn't be more than one columns.
+				const column = _.first(columns);
+				if (columns && column === "Ready for Test" || column === "In Testing" || column === "Done") {
+					finalIssuesForChangelog.push({
+						type: isFeature ? "feature" : "bug",
+						number: issue && issue.number,
+						title: issue && issue.title,
+						url: issue && issue.url
+					});
+				} else {
+					console.log(`Item ${issue && issue.url}(${issue && issue.title}) will not be included in changelog as its status is ${columns}`.yellow);
+				}
+			}
+		});
+
+		return finalIssuesForChangelog;
+	})
+	.then(data => {
+		const features = [];
+		const bugs = [];
+
+		_.sortBy(data, (d) => d.number)
+			.forEach(d => {
+				if (d.type === "feature") {
+					features.push(`* [Implemented #${d.number}](${d.url}): ${d.title}`);
+				} else {
+					bugs.push(`* [Fixed #${d.number}](${d.url}): ${d.title}`);
+				}
+			});
+
+		const pathToChangelog = path.join(__dirname, "CHANGELOG.md");
+		let changelogContent = fs.readFileSync(pathToChangelog).toString();
+
+		if (features.length === 0 && bugs.length === 0) {
+			console.error(`Unable to find anything ready for milestone ${selectedMilestone}`.red);
+			process.exit(2);
+		}
+
+		const monthNames = ["January", "February", "March", "April", "May", "June",
+			"July", "August", "September", "October", "November", "December"
+		];
+		const currentDate = new Date();
+
+		let newChangelogContent = `\n${selectedMilestone} (${currentDate.getFullYear()}, ${monthNames[currentDate.getMonth()]} ${currentDate.getDate()})
+===
+`;
+		if (features.length > 0) {
+			newChangelogContent += `
+### New
+
+${features.join("\n")}
+`;
+		}
+		if (bugs.length) {
+			newChangelogContent += `
+### Fixed
+
+${bugs.join("\n")}
+`;
+		}
+
+		changelogContent = changelogContent.replace(/(NativeScript CLI Changelog\r?\n=+\r?\n)([\s\S]*)/m, `$1${newChangelogContent}\n$2`);
+		fs.writeFileSync(pathToChangelog, changelogContent);
+		console.log(`Successfully added Changelog for ${selectedMilestone}`.green);
+		console.log("Commit the local changes and send a PR.".magenta);
+	})
+	.catch(error => console.error(error));