Return events in structured sequence export format.

The events endpoint will return data in the format
agreed with Multiseis if the request has an
Accept: application/vnd.seis+json
header.

Related to #12.

lib/www/server/api/middleware/event/list/index.js

@@ -1,13 +1,13 @@
 const json = require('./json');
 const geojson = require('./geojson');
-// const seis = require('./seis');
+const seis = require('./seis');
 
 module.exports = async function (req, res, next) {
 	try {
 		const handlers = {
 			"application/json": json,
 			"application/geo+json": geojson,
-// 			"application/vnd.seis+json": seis
+			"application/vnd.seis+json": seis
 		};
 		
 		const mimetype = req.accepts(Object.keys(handlers));

lib/www/server/api/middleware/event/list/seis.js

@@ -0,0 +1,155 @@
+
+const { event, sequence } = require('../../../../lib/db');
+
+function transform (events, sequences) {
+	
+	const output = {
+		Sequences: []
+	};
+	
+	// NOTE: Events come in descending chronological
+	// order from the server.
+	for (const event of events.reverse()) {
+		const SequenceNumber = event.sequence;
+		if (SequenceNumber) {
+			const sequence = sequences.find(s => s.sequence = SequenceNumber);
+			if (!sequence) {
+				throw Error(`Sequence ${SequenceNumber} not found in sequence list`);
+			}
+			
+			let SequenceObject = output.Sequences.find(s => s.SequenceNumber == SequenceNumber);
+			if (!SequenceObject) {
+				SequenceObject = {
+					SequenceNumber,
+					Entries: []
+				};
+				output.Sequences.push(SequenceObject);
+			}
+			
+			if (event.labels.includes("FSP")) {
+				const entry = {
+					"EntryType": "Start of line recording",
+					"EntryTypeId": 3000,
+					"Comment": event.remarks.toString(),
+					"Heading": sequence.azimuth,
+					"IsReshoot": sequence.reshoot, // FIXME Add this property to sequence object
+					"IsUndershoot": false,
+					// NOTE https://gitlab.com/wgp/dougal/software/-/issues/12#note_419162674
+					"LineNumber": sequence.line.toString(),
+					"LineType": "Prime", // FIXME
+					"ShotPointId": event.point,
+					"Time": event.tstamp
+				}
+				
+				SequenceObject.Entries.push(entry);
+			}
+			
+			if (event.labels.includes("FGSP")) {
+				const entry = {
+					"EntryType": "Start good",
+					"EntryTypeId": 3001,
+					"ShotPointId": event.point,
+					"Time": event.tstamp
+				}
+				
+				SequenceObject.Entries.push(entry);
+			}
+			
+			if (event.labels.includes("FCSP")) {
+				const entry = {
+					"EntryType": "Start charged",
+					"EntryTypeId": 3002,
+					"ShotPointId": event.point,
+					"Time": event.tstamp
+				}
+				
+				SequenceObject.Entries.push(entry);
+			}
+			
+			if (event.labels.includes("LGFFSP")) {
+				const entry = {
+					"EntryType": "Last good Full Fold",
+					"EntryTypeId": 3008,
+					"ShotPointId": event.point,
+					"Time": event.tstamp
+				}
+				
+				SequenceObject.Entries.push(entry);
+			}
+			
+			if (event.labels.includes("LCFFSP")) {
+				const entry = {
+					"EntryType": "Last charged Full Fold",
+					"EntryTypeId": 3009,
+					"ShotPointId": event.point,
+					"Time": event.tstamp
+				}
+				
+				SequenceObject.Entries.push(entry);
+			}
+			
+			if (event.labels.includes("FDSP")) {
+				const entry = {
+					"EntryType": "Midnight",
+					"EntryTypeId": 3003,
+					"ShotPointId": event.point,
+					"Time": event.tstamp
+				}
+				
+				SequenceObject.Entries.push(entry);
+			}
+			
+			if (event.labels.includes("LCSP")) {
+				const entry = {
+					"EntryType": "End charged",
+					"EntryTypeId": 3005,
+					"ShotPointId": event.point,
+					"Time": event.tstamp
+				}
+				
+				SequenceObject.Entries.push(entry);
+			}
+			
+			if (event.labels.includes("LGSP")) {
+				const entry = {
+					"EntryType": "End good",
+					"EntryTypeId": 3006,
+					"ShotPointId": event.point,
+					"Time": event.tstamp
+				}
+				
+				SequenceObject.Entries.push(entry);
+			}
+			
+			if (event.labels.includes("LSP")) {
+				const entry = {
+					"EntryType": "End of line recording",
+					"EntryTypeId": 3007,
+					"IsNTBP": sequence.status == "ntbp",
+					"LineStatus": "Complete", // FIXME
+					"ShotPointId": event.point,
+					"Time": event.tstamp
+				}
+				
+				SequenceObject.Entries.push(entry);
+			}
+			
+		}
+	}
+	
+	return output;
+}
+
+const seis = async function (req, res, next) {
+	try {
+		const events = await event.list(req.params.project, req.query);
+		const sequences = await sequence.list(req.params.project);
+		const response = transform(events, sequences);
+		res.status(200).send(response);
+		next();
+	} catch (err) {
+		next(err);
+	}
+};
+
+module.exports = seis;