Add API endpoint for patching a project

lib/www/server/api/index.js

@@ -98,6 +98,7 @@ app.map({
 	},
 	'/project/:project/configuration': {
 		get: [ mw.auth.access.write, mw.project.configuration.get ],	// Get project configuration
+		patch: [ mw.auth.access.write, mw.project.configuration.patch ],	// Modify project configuration
 	},
 
 	/*

lib/www/server/api/middleware/project/configuration/index.js

@@ -3,6 +3,6 @@ module.exports = {
 	get: require('./get'),
 	// post: require('./post'),
 	// put: require('./put'),
-	// patch: require('./patch'),
+	patch: require('./patch'),
 	// delete: require('./delete'),
 };

lib/www/server/api/middleware/project/configuration/patch.js

@@ -0,0 +1,16 @@
+
+const { project } = require('../../../../lib/db');
+
+module.exports = async function (req, res, next) {
+
+	try {
+		// TODO
+		// Implement If-Match header requirements
+		res.send(await project.configuration.patch(req.params.project, req.body));
+		next();
+	} catch (err) {
+		next(err);
+	}
+
+
+};

lib/www/server/lib/db/project/configuration/index.js

@@ -3,6 +3,6 @@ module.exports = {
 	get: require('./get'),
 	// post: require('./post'),
 	// put: require('./put'),
-	// patch: require('./patch'),
+	patch: require('./patch'),
 	// delete: require('./delete'),
 };

lib/www/server/lib/db/project/configuration/patch.js

@@ -0,0 +1,54 @@
+const { setSurvey } = require('../../connection');
+const { deepMerge } = require('../../../utils');
+const { modify } = require('../create');
+
+
+async function patch (projectId, payload, opts = {}) {
+	let client;
+	try {
+		client = await setSurvey(); // Use public schema
+
+		const text = `
+			SELECT meta
+			FROM projects
+			WHERE pid = $1;
+		`;
+
+		const res = await client.query(text, [projectId]);
+
+		const source = res.rows[0].meta;
+
+		if (!source) {
+			throw { status: 404, message: "Not found" };
+		}
+
+		if (("id" in payload) && (projectId != payload.id)) {
+			throw {
+				status: 422,
+				message: "Project ID cannot be changed in this Dougal version"
+			}
+		}
+
+		if (("name" in payload) && (source.name != payload.name)) {
+			throw {
+				status: 422,
+				message: "Project name cannot be changed in this Dougal version"
+			}
+		}
+
+		const dest = deepMerge(source, payload);
+		await modify(projectId, dest);
+		return dest;
+
+	} catch (err) {
+		if (err.code == "42P01") {
+			throw { status: 404, message: "Not found" };
+		} else {
+			throw err;
+		}
+	} finally {
+		client.release();
+	}
+}
+
+module.exports = patch;

lib/www/server/lib/db/project/create.js

@@ -128,6 +128,22 @@ async function addProjectToList (projectDefinition) {
 	}
 }
 
+async function updateProject (projectId, projectDefinition) {
+	const sql = `
+		UPDATE public.projects
+		SET
+			name = $2,
+			meta = $3
+		WHERE pid = $1;
+	`;
+	const values = [ projectId, projectDefinition.name, projectDefinition ];
+	try {
+		return await pool.query(sql, values);
+	} catch (err) {
+		throw err;
+	}
+}
+
 async function create (projectDefinition) {
 
 	const syntaxOk = checkSyntax(projectDefinition);
@@ -154,8 +170,26 @@ async function create (projectDefinition) {
 }
 
 
+async function modify (projectId, projectDefinition) {
+
+	const syntaxOk = checkSyntax(projectDefinition);
+	if (syntaxOk !== true) {
+		throw { status: 400, message: syntaxOk };
+	} else {
+		try {
+			const res = await updateProject(projectId, projectDefinition);
+		} catch (err) {
+			DEBUG(err);
+			throw { status: 500, message: err.message ?? "Failed to update project definition", detail: err.detail }
+		}
+	}
+
+}
+
+
 module.exports = {
 	checkSyntax,
-	create
+	create,
+	modify
 };