From f2c8e60d56e75e120c8b43f357a18fe601fd033f Mon Sep 17 00:00:00 2001
From: Jannis R <mail@jannisr.de>
Date: Wed, 7 Mar 2018 20:23:53 +0100
Subject: [PATCH] wip: departures part 2

---
 .../{departures.js => departures/index.js}    | 17 ++++----
 commands/departures/render.js                 | 43 +++++++++++++++++++
 lib/render-time-left.js                       | 11 +++++
 package.json                                  |  3 ++
 4 files changed, 66 insertions(+), 8 deletions(-)
 rename commands/{departures.js => departures/index.js} (87%)
 create mode 100644 commands/departures/render.js
 create mode 100644 lib/render-time-left.js

diff --git a/commands/departures.js b/commands/departures/index.js
similarity index 87%
rename from commands/departures.js
rename to commands/departures/index.js
index 6f73974..422dbe8 100644
--- a/commands/departures.js
+++ b/commands/departures/index.js
@@ -3,10 +3,12 @@
 const searchStations = require('vbb-stations-autocomplete')
 const getStations = require('vbb-stations')
 const parseTime = require('parse-messy-time')
+const linesAt = require('vbb-lines-at')
 const hafas = require('vbb-hafas')
 
-const commandKeys = require('../lib/commands-keyboard')
-const whenKeys = require('../lib/when-keyboard')
+const commandKeys = require('../../lib/commands-keyboard')
+const whenKeys = require('../../lib/when-keyboard')
+const renderDeps = require('./render')
 
 const promptWhen = `\
 *When?*
@@ -41,12 +43,7 @@ const parseWhen = async (when, ctx) => {
 	return when
 }
 
-const renderDeps = (deps, header) => {
-	// todo
-}
-
 const printDeps = async (allDeps, ctx) => {
-	await ctx.replyWithMarkdown(`todo`, commandKeys) // todo
 	for (let i = 0; i < allDeps.length; i += 10) {
 		const deps = allDeps.slice(i, i + 10)
 		await ctx.replyWithMarkdown(renderDeps(deps), commandKeys)
@@ -88,7 +85,11 @@ const departures = async (ctx, next) => {
 		ctx.putData('where', null)
 	])
 
-	// fetch & render
+	let lines = linesAt[where.id] || []
+	lines = lines.map(l => '`' + l.name + '`').join(', ')
+	await ctx.replyWithMarkdown('*' + where.name + '*\n' + lines)
+
+	// fetch & render deps
 	await ctx.replyWithChatAction('typing')
 	const deps = await hafas.departures(where.id, when)
 	await printDeps(deps, ctx)
diff --git a/commands/departures/render.js b/commands/departures/render.js
new file mode 100644
index 0000000..ba3c393
--- /dev/null
+++ b/commands/departures/render.js
@@ -0,0 +1,43 @@
+'use strict'
+
+const stringWidth = require('string-width')
+
+const renderTimeLeft = require('../../lib/render-time-left')
+
+const SPACING = '  '
+
+const renderDeps = (deps) => {
+	const rows = []
+	const widths = []
+	const maxWidth = [0, 0, 0]
+
+	for (let dep of deps) {
+		// todo: show delay
+		const line = dep.line.name
+		const time = renderTimeLeft(new Date(dep.when) - Date.now())
+		const dir = dep.direction
+
+		rows.push([line, time, dir])
+		const width = [stringWidth(line), stringWidth(time), stringWidth(dir)]
+		widths.push(width)
+		maxWidth[0] = Math.max(width[0], maxWidth[0])
+		maxWidth[1] = Math.max(width[1], maxWidth[1])
+		maxWidth[2] = Math.max(width[2], maxWidth[2])
+	}
+
+	// render table
+	let str = '```'
+	for (let i = 0; i < rows.length; i++) {
+		const row = rows[i]
+		str += '\n'
+		for (let j = 0; j < 3; j++) {
+			str += row[j] + SPACING
+			if (j !== 2) str += ' '.repeat(maxWidth[j] - widths[i][j])
+		}
+	}
+	str += '\n```'
+
+	return str
+}
+
+module.exports = renderDeps
diff --git a/lib/render-time-left.js b/lib/render-time-left.js
new file mode 100644
index 0000000..dcbb49f
--- /dev/null
+++ b/lib/render-time-left.js
@@ -0,0 +1,11 @@
+'use strict'
+
+const ms = require('ms')
+
+const renderTimeLeft = (t) => {
+	t = Math.round(t / 1000)
+	if (t === 0) return 0
+	return (t < 0 ? '-' : '') + ms(Math.abs(t * 1000))
+}
+
+module.exports = renderTimeLeft
diff --git a/package.json b/package.json
index 4b17a73..82e08c7 100644
--- a/package.json
+++ b/package.json
@@ -24,9 +24,12 @@
 		"hifo": "^1.0.0",
 		"js-string-escape": "^1.0.1",
 		"level": "^3.0.0",
+		"ms": "^2.1.1",
 		"parse-messy-time": "^2.1.0",
+		"string-width": "^2.1.1",
 		"telegraf": "^3.19.0",
 		"vbb-hafas": "^4.1.1",
+		"vbb-lines-at": "^3.11.0",
 		"vbb-stations": "^6.2.1",
 		"vbb-stations-autocomplete": "^3.2.0"
 	}