Backend v1

functions/endpoints/mainnet.js

@@ -40,6 +40,9 @@ app.get( '/api/rocketeer/:id', async ( req, res ) => {
 
 } )
 
+/* ///////////////////////////////
+// VGR's dashboard integration
+// /////////////////////////////*/
 app.post( '/api/integrations/avatar/', setAvatar )
 app.delete( '/api/integrations/avatar/', resetAvatar )
 

functions/endpoints/testnet.js

@@ -1,6 +1,7 @@
 const app = require( './express' )()
 const { getTotalSupply } = require( '../modules/contract' )
 const { safelyReturnRocketeer, web2domain } = require( '../nft-media/rocketeer' )
+const { generateNewOutfit, setPrimaryOutfit } = require( '../integrations/changingroom' )
 
 ////////////////////////////////
 // Specific Rocketeer instances
@@ -38,6 +39,11 @@ app.get( '/testnetapi/rocketeer/:id', async ( req, res ) => {
 
 } )
 
+/* ///////////////////////////////
+// Changing room endpoints
+// /////////////////////////////*/
+app.post( '/testnetapi/rocketeer/:id/outfits', generateNewOutfit )
+app.put( '/testnetapi/rocketeer/:id/outfits', setPrimaryOutfit )
 
 // Collection data
 app.get( '/testnetapi/collection', async ( req, res ) => res.json( {

functions/integrations/changingroom.js

@@ -0,0 +1,131 @@
+const { generateNewOutfitFromId } = require( '../nft-media/changing-room' )
+const { db, dataFromSnap } = require( '../modules/firebase' )
+const Web3 = require( 'web3' )
+const web3 = new Web3()
+
+/* ///////////////////////////////
+// POST handler for new avatars
+// /////////////////////////////*/
+exports.generateNewOutfit = async function( req, res ) {
+
+	// Parse the request
+    let { id } = req.params
+    if( !id ) return res.json( { error: `No ID specified in URL` } )
+
+    // Protect against malformed input
+    id = Math.floor( Math.abs( id ) )
+    if( typeof id !== 'number' ) return res.json( { error: `Malformed request` } )
+
+    // Set ID to string so firestore can handle it
+    id = `${ id }`
+
+	try {
+
+		// Get request data
+		const { message, signature, signatory } = req.body
+		if( !message || !signatory || !signature ) throw new Error( `Malformed request` )
+
+		// Decode message
+		const confirmedSignatory = web3.eth.accounts.recover( message, signature )
+		if( signatory.toLowerCase() !== confirmedSignatory.toLowerCase() ) throw new Error( `Bad signature` )
+
+		// Validate message
+		const messageObject = JSON.parse( message )
+		const { signer, rocketeerId, chainId } = messageObject
+		if( signer.toLowerCase() !== confirmedSignatory.toLowerCase() || !rocketeerId || chainId !== chain || !network ) throw new Error( `Invalid message` )
+		if( rocketeerId != id ) throw new Error( `Invalid Rocketeer in message` )
+
+        // Set chain based on envronnment
+		const chain = process.env.NODE_ENV == 'development' ? '0x4' : '0x1'
+		const network = chain == '0x1' ? 'mainnet' : 'rinkeby'
+
+		// Generate new rocketeer svg
+		const mediaLink = await generateNewOutfitFromId( id, network )
+
+		return res.json( {
+			outfit: mediaLink
+		} )
+
+    } catch( e ) {
+
+        // Log error for debugging
+        console.error( `POST Changing room api error for ${ id }: `, e )
+
+        // Return error to frontend
+        return res.json( { error: e.mesage || e.toString() } )
+
+    }
+
+}
+
+/* ///////////////////////////////
+// PUT handler for changing the 
+// current outfit
+// /////////////////////////////*/
+exports.setPrimaryOutfit = async function( req, res ) {
+
+	// Parse the request
+    let { id } = req.params
+    if( !id ) return res.json( { error: `No ID specified in URL` } )
+
+    // Protect against malformed input
+    id = Math.floor( Math.abs( id ) )
+    if( typeof id !== 'number' ) return res.json( { error: `Malformed request` } )
+
+    // Set ID to string so firestore can handle it
+    id = `${ id }`
+
+	try {
+
+		// Get request data
+		const { message, signature, signatory } = req.body
+		if( !message || !signatory || !signature ) throw new Error( `Malformed request` )
+
+		// Decode message
+		const confirmedSignatory = web3.eth.accounts.recover( message, signature )
+		if( signatory.toLowerCase() !== confirmedSignatory.toLowerCase() ) throw new Error( `Bad signature` )
+
+		// Validate message
+		const messageObject = JSON.parse( message )
+		let { signer, outfitId, chainId } = messageObject
+		if( signer.toLowerCase() !== confirmedSignatory.toLowerCase() || !outfitId || chainId !== chain || !network ) throw new Error( `Invalid message` )
+		
+		// Validate id format
+		outfitId = Math.floor( Math.abs( outfitId ) )
+		if( typeof outfitId !== 'number' ) return res.json( { error: `Malformed request` } )
+
+		// Set ID to string so firestore can handle it
+		outfitId = `${ outfitId }`
+
+        // Set chain based on envronnment
+		const chain = process.env.NODE_ENV == 'development' ? '0x4' : '0x1'
+		const network = chain == '0x1' ? 'mainnet' : 'rinkeby'
+
+		// Retreive old Rocketeer data
+		const rocketeer = await db.collection( `${ network }Rocketeers` ).doc( id ).get().then( dataFromSnap )
+
+		// Grab attributes that will not change
+		const { value: available_outfits } = rocketeer.attributes.find( ( { trait_type } ) => trait_type == "available outfits" ) || { value: 0 }
+
+		// Only allow to set existing outfits
+		if( available_outfits < outfitId ) throw new Error( `Your Rocketeer has ${ available_outfits }, you can't select outfit ${ outfitId }` )
+
+		// Change the primary media file
+		const imagePath = `${ outfitId == 0 ? id : `${ id }-${ outfitId }` }.jpg`
+		await db.collection( `${ network }Rocketeers` ).doc( id ).set( {
+			image: `https://storage.googleapis.com/rocketeer-nft.appspot.com/${ network }Rocketeers/${ imagePath }`
+		}, { merge: true } )
+
+
+
+    } catch( e ) {
+
+        // Log error for debugging
+        console.error( `PUT Changing room api error for ${ id }: `, e )
+
+        // Return error to frontend
+        return res.json( { error: e.mesage || e.toString() } )
+
+    }
+
+}

functions/modules/helpers.js

@@ -43,6 +43,7 @@ exports.pickRandomAttributes = ( attributes ) => {
 }
 
 const nameColor = require('color-namer')
+const Color = require('color')
 exports.getColorName = ( rgb ) => {
     try {
         return nameColor( rgb ).basic[0].name
@@ -50,6 +51,13 @@ exports.getColorName = ( rgb ) => {
         return rgb
     }
 }
+exports.getRgbArrayFromColorName = name => {
+
+    const { hex } = nameColor( name ).basic[0]
+    const color = Color( hex )
+    return color.rgb().array()
+
+}
 
 // ///////////////////////////////
 // Attribute sources

functions/nft-media/changing-room.js

@@ -0,0 +1,88 @@
+const { db, dataFromSnap } = require( '../modules/firebase' )
+const { getRgbArrayFromColorName, randomNumberBetween } = require( '../modules/helpers' )
+const svgFromAttributes = require( './svg-generator' )
+
+// ///////////////////////////////
+// Rocketeer generator
+// ///////////////////////////////
+exports.generateNewOutfitFromId = async function( id, network='mainnet' ) {
+
+
+	/* ///////////////////////////////
+	// Changing room variables
+	// /////////////////////////////*/
+	// Set the entropy level. 255 would mean 0 can become 255 and -255
+	let colorEntropy = 20
+	const newOutfitAllowedInterval = 1000 * 60 * 60 * 24 * 30
+	const specialEditionMultiplier = 1.1
+
+	// Retreive old Rocketeer data
+	const rocketeer = await db.collection( `${ network }Rocketeers` ).doc( id ).get().then( dataFromSnap )
+
+	// Apply special properties
+	const { value: edition } = rocketeer.attributes.find( ( { trait_type } ) => trait_type == "edition" )
+	if( edition != 'regular' ) colorEntropy *= specialEditionMultiplier
+
+	// Validate this request
+	const { value: available_outfits } = rocketeer.attributes.find( ( { trait_type } ) => trait_type == "available outfits" ) || { value: 0 }
+	const { value: last_outfit_change } = rocketeer.attributes.find( ( { trait_type } ) => trait_type == "last outfit change" ) || { value: 0 }
+
+	// Check whether this Rocketeer is allowed to change
+	const timeUntilAllowedToChange = newOutfitAllowedInterval - ( Date.now() - last_outfit_change )
+	if( timeUntilAllowedToChange > 0 ) throw new Error( `You changed your outfit too recently, a change is avalable in ${ Math.floor( timeUntilAllowedToChange / ( 1000 * 60 * 60 ) ) } hours` )
+
+	// Grab attributes that will not change
+	const staticAttributes = rocketeer.attributes.filter( ( { trait_type } ) => ![ 'last outfit change', 'available outfits' ].includes( trait_type ) )
+
+	// Mark this Rocketeer as outfit changed so other requests can't clash with this one
+	await db.collection( `${ network }Rocketeers` ).doc( id ).set( {
+		attributes: [
+			...staticAttributes,
+			{ trait_type: 'available outfits', value: available_outfits + 1, },
+			{ trait_type: 'last outfit change', value: Date.now(), display_type: "date" }
+		]
+	} ,{ merge: true } )
+
+	// Generate colors with entropy based on color names
+	rocketeer.attributes = rocketeer.attributes.map( attribute => {
+
+		if( !attribute.trait_type.includes( 'color' ) ) return attribute
+
+		// Generate rgb with entropy
+		const rgbArray = getRgbArrayFromColorName( attribute.value )
+		const rgb = rgbArray.map( baseValue => {
+
+			// Choose whether to increment or decrement
+			const increment = !!( Math.random() > .5 )
+
+			// Determine by how much to change the color
+			const entropy = increment ? colorEntropy : ( -1 * colorEntropy )
+
+			// Generate a new value
+			let newValue = randomNumberBetween( baseValue, baseValue + entropy )
+
+			// If the color if out of bounds, cycle it into the 255 range
+			if( newValue > 255 ) newValue -= 255
+			if( newValue < 0 ) newValue = Math.abs( newValue )
+
+			// Return the new rgb value
+			return newValue
+
+		} )
+
+		const [ r, g, b ] =	rgb
+
+		return {
+			...attribute,
+			value: `rgb( ${ r }, ${ g }, ${ b } )`
+		}
+
+	} )
+
+	// Generate, compile and upload image
+	// Path format of new rocketeers is id-outfitnumber.{svg,jpg}
+	const newOutfitSvg = await svgFromAttributes( rocketeer.attributes, `${ network }Rocketeers/${ id }-${ available_outfits + 1 }` )
+
+	return newOutfitSvg
+
+}

functions/nft-media/svg-generator.js

@@ -8,7 +8,7 @@ const { getStorage } = require( 'firebase-admin/storage' )
 const { convert } = require("convert-svg-to-jpeg")
 
 // Existing file checker
-const checkIfFilesExist = async ( svg, jpeg, path ) => {
+const failIfFilesExist = async ( svg, jpeg, path ) => {
 
 	const [ [ svgExists ], [ jpegExists ] ] = await Promise.all( [ svg.exists(), jpeg.exists() ] )
 	if( svgExists || jpegExists ) throw new Error( `${ svgExists ? 'SVG' : '' } ${ jpegExists ? ' and JPEG' : '' } already present at ${ path }. This should never happen!` )
@@ -27,7 +27,7 @@ module.exports = async function svgFromAttributes( attributes=[], path='' ) {
 	const bucket = storage.bucket()
 	const svgFile = bucket.file( `${path}.svg` )
 	const rasterFile = bucket.file( `${path}.jpg` )
-	await checkIfFilesExist( svgFile, rasterFile, path )
+	await failIfFilesExist( svgFile, rasterFile, path )
 
 	// Get properties
 	const { value: primary_color } = attributes.find( ( { trait_type } ) => trait_type == "outfit color" )
@@ -141,7 +141,7 @@ module.exports = async function svgFromAttributes( attributes=[], path='' ) {
 	const bakedRaster = await convert( bakedSvg, {  } )
 
 	// Double check that files do not yet exist (in case of weird race condition)
-	await checkIfFilesExist( svgFile, rasterFile, path )
+	await failIfFilesExist( svgFile, rasterFile, path )
 
 	// Save files
 	await svgFile.save( bakedSvg )

functions/package.json

@@ -14,6 +14,7 @@
   },
   "main": "index.js",
   "dependencies": {
+    "color": "^4.0.2",
     "color-namer": "^1.4.0",
     "convert-svg-to-jpeg": "^0.5.0",
     "cors": "^2.8.5",