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Easherma/image building backend #2068

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Easherma/image building backend #2068

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a1120cd
feat: example endpoint to draw
easherma Sep 15, 2020
43680bd
feat: dumb example with clock
easherma Oct 6, 2020
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42 changes: 42 additions & 0 deletions app/api_routes.js
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Original file line number Diff line number Diff line change
Expand Up @@ -3,6 +3,7 @@ const bodyParser = require('body-parser')
const cors = require('cors')
const resources = require('./resources')
const jwtCheck = require('./authentication')

/**
* @swagger
*
Expand Down Expand Up @@ -880,6 +881,47 @@ routes.get('/api/v1/votes', cors(), jwtCheck, resources.v1.votes.get)
routes.post('/api/v1/votes', cors(), jwtCheck, resources.v1.votes.post)
routes.put('/api/v1/votes', cors(), jwtCheck, resources.v1.votes.put)

routes.get('/api/streets/draw', (req, res) => {
const { createCanvas } = require('canvas')

const width = 500
const height = 500

const canvas = createCanvas(width, height)
const context = canvas.getContext('2d')
let radius = canvas.height / 2
context.translate(radius, radius)
radius = radius * 0.9

function drawFace (ctx, radius) {
var grad

ctx.beginPath()
ctx.arc(0, 0, radius, 0, 2 * Math.PI)
ctx.fillStyle = 'white'
ctx.fill()

grad = ctx.createRadialGradient(0, 0, radius * 0.95, 0, 0, radius * 1.05)
grad.addColorStop(0, '#333')
grad.addColorStop(0.5, 'white')
grad.addColorStop(1, '#333')
ctx.strokeStyle = grad
ctx.lineWidth = radius * 0.1
ctx.stroke()

ctx.beginPath()
ctx.arc(0, 0, radius * 0.1, 0, 2 * Math.PI)
ctx.fillStyle = '#333'
ctx.fill()
}

drawFace(context, radius)

// stream out response
res.setHeader('Content-Type', 'image/png')
canvas.pngStream().pipe(res)
})

// Catch all for all broken api paths, direct to 404 response.
routes.get('/api/*', (req, res) => {
res
Expand Down
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