From c93188a5a7b95d6e4b0203abf0a8de79ff15acee Mon Sep 17 00:00:00 2001
From: "D. Berge" <dberge@aaltronav.eu>
Date: Sun, 16 Aug 2020 10:50:58 +0200
Subject: [PATCH] Add event POST middleware to API

---
 lib/www/server/api/index.js                 |   2 +-
 lib/www/server/api/middleware/event/post.js |  15 +++
 lib/www/server/lib/db/event/post.js         | 122 ++++++++++++++++++++
 3 files changed, 138 insertions(+), 1 deletion(-)

diff --git a/lib/www/server/api/index.js b/lib/www/server/api/index.js
index e192b2c..530ebbf 100644
--- a/lib/www/server/api/index.js
+++ b/lib/www/server/api/index.js
@@ -84,7 +84,7 @@ app.map({
 //
 	'/project/:project/event/': {
 		get: [ mw.event.list ],
-// 		post: [ mw.event.post ],
+		post: [ mw.event.post ],
 	},
 // 	'/project/:project/event/:event': {
 // 		get: [ mw.event.get ],
diff --git a/lib/www/server/api/middleware/event/post.js b/lib/www/server/api/middleware/event/post.js
index e69de29..c841a49 100644
--- a/lib/www/server/api/middleware/event/post.js
+++ b/lib/www/server/api/middleware/event/post.js
@@ -0,0 +1,15 @@
+
+const { event } = require('../../../lib/db');
+
+module.exports = async function (req, res, next) {
+
+	try {
+		await event.post(req.params.project, req.body, req.query);
+		res.status(201).send();
+		next();
+	} catch (err) {
+		console.error(err);
+		next(err);
+	}
+
+};
diff --git a/lib/www/server/lib/db/event/post.js b/lib/www/server/lib/db/event/post.js
index e69de29..60d5dc5 100644
--- a/lib/www/server/lib/db/event/post.js
+++ b/lib/www/server/lib/db/event/post.js
@@ -0,0 +1,122 @@
+const { setSurvey, transaction } = require('../connection');
+
+async function insertSeqRemarks(remarks, shotNumber, sequence, client) {
+	const text = `
+		INSERT INTO events_seq (remarks, shot_number, sequence)
+		VALUES ($1, $2, $3)
+		RETURNING id;
+	`;
+
+	console.log("insertSeqRemarks", text, remarks, shotNumber, sequence);
+	return (await client.query(text, [remarks, shotNumber, sequence]))[0].id;
+}
+
+async function insertSeqLabel(label, eventId, client) {
+	const text = `
+		INSERT INTO events_seq_labels (label, id)
+		VALUES ($1, $2);
+	`;
+
+	console.log("insertSeqLabel", text, label, eventId);
+	return await client.query(text, [label, eventId]);
+}
+
+async function insertShotLabel(label, shotNumber, sequence, client) {
+	const text = `
+		INSERT INTO events_seq_shots_labels (label, shot_number, sequence)
+		VALUES ($1, $2, $3);
+	`;
+
+	console.log("insertShotLabel", text, label, shotNumber, sequence);
+	return await client.query(text, [label, shotNumber, sequence]);
+}
+
+async function insertTimedEventLabel(label, eventId, client) {
+	const text = `
+		INSERT INTO events_timed_labels (label, id)
+		VALUES ($1, $2);
+	`;
+
+	console.log("insertTimedEventLabel", text, label, eventId);
+	return await client.query(text, [label, eventId]);
+}
+
+/**
+ * Inserts events into the database.
+ *
+ * Events may have the following forms:
+ *
+ * Event associated with a time:
+ *
+ * {
+ *   remarks: "…",
+ *   ts0: "…",
+ *   ts1: "…",
+ *   labels: [ "…", "…", … ]
+ * }
+ *
+ * Events associated with a shotpoint:
+ *
+ * {
+ *   remarks: "…",
+ *   shotNumber: 0000,
+ *   sequence: 000,
+ *   labels: [ "…", "…", … ]
+ * }
+ *
+ * In both cases, either remarks or labels may be omitted.
+ */
+async function post (projectId, payload, opts = {}) {
+	console.log("post event", projectId, payload);
+
+	const client = await setSurvey(projectId);
+	await transaction.begin(client);
+	try {
+		if (!Array.isArray(payload)) {
+			payload = [payload];
+		}
+
+		for (const event of payload) {
+			console.log("Event", event);
+			if (event.sequence && event.shotNumber) {
+				// A shot event
+				console.log("Shot event");
+				if (event.remarks) {
+					const eventId = await insertSeqRemarks(event.remarks, event.shotNumber, event.sequence, client);
+					console.log("eventId", eventId);
+					if (event.labels) {
+						for (const label of event.labels) {
+							await insertSeqLabel(label, eventId, client);
+						}
+					}
+				} else if (event.labels) {
+					// A label event
+					for (const label of event.labels) {
+						await insertShotLabel(label, event.shotNumber, event.sequence, client);
+					}
+				}
+			} else if (event.ts0) {
+				// A timed event
+
+				// Called even if remarks is blank, as timed labels are always associated
+				// with an event id from events_timed.
+				const eventId = await insertTimedEvent(event.remarks, event.ts0, event.ts1, client);
+
+				if (event.labels) {
+					for (const label of event.labels) {
+						await insertTimedEventLabel(label, eventId, client);
+					}
+				}
+
+			}
+		}
+
+		transaction.commit(client);
+	} catch (err) {
+		transaction.rollback(client)
+	} finally {
+		client.release();
+	}
+}
+
+module.exports = post;