Files
metrics/source/app/metrics/index.mjs
2021-02-03 23:34:59 +01:00

94 lines
4.1 KiB
JavaScript

//Imports
import util from "util"
import ejs from "ejs"
import SVGO from "svgo"
import * as utils from "./utils.mjs"
//Setup
export default async function metrics({login, q, dflags = []}, {graphql, rest, plugins, conf, die = false, verify = false, convert = null}, {Plugins, Templates}) {
//Compute rendering
try {
//Debug
login = login.replace(/[\n\r]/g, "")
console.debug(`metrics/compute/${login} > start`)
console.debug(util.inspect(q, {depth:Infinity, maxStringLength:256}))
//Load template
const template = q.template || conf.settings.templates.default
if ((!(template in Templates))||(!(template in conf.templates))||((conf.settings.templates.enabled.length)&&(!conf.settings.templates.enabled.includes(template))))
throw new Error("unsupported template")
const {image, style, fonts, views, partials} = conf.templates[template]
const computer = Templates[template].default || Templates[template]
//Initialization
const pending = []
const queries = conf.queries
const data = {animated:true, base:{}, config:{}, errors:[], plugins:{}, computed:{}}
const imports = {plugins:Plugins, templates:Templates, metadata:conf.metadata, ...utils}
//Partial parts
{
data.partials = new Set([
...decodeURIComponent(q["config.order"] ?? "").split(",").map(x => x.trim().toLocaleLowerCase()).filter(partial => partials.includes(partial)),
...partials,
])
console.debug(`metrics/compute/${login} > content order : ${[...data.partials]}`)
}
//Executing base plugin and compute metrics
console.debug(`metrics/compute/${login} > compute`)
await Plugins.base({login, q, data, rest, graphql, plugins, queries, pending, imports}, conf)
await computer({login, q, dflags}, {conf, data, rest, graphql, plugins, queries, account:data.account}, {pending, imports})
const promised = await Promise.all(pending)
//Check plugins errors
const errors = [...promised.filter(({result = null}) => result?.error), ...data.errors]
if (errors.length) {
console.warn(`metrics/compute/${login} > ${errors.length} errors !`)
if (die)
throw new Error(`An error occured during rendering, dying`)
else
console.warn(util.inspect(errors, {depth:Infinity, maxStringLength:256}))
}
//Rendering and resizing
console.debug(`metrics/compute/${login} > render`)
let rendered = await ejs.render(image, {...data, s:imports.s, f:imports.format, style, fonts}, {views, async:true})
const {resized, mime} = await imports.svgresize(rendered, {paddings:q["config.padding"], convert})
rendered = resized
//Additional SVG transformations
if (/svg/.test(mime)) {
//Optimize rendering
if ((conf.settings?.optimize)&&(!q.raw)) {
console.debug(`metrics/compute/${login} > optimize`)
const svgo = new SVGO({full:true, plugins:[{cleanupAttrs:true}, {inlineStyles:false}]})
const {data:optimized} = await svgo.optimize(rendered)
rendered = optimized
}
//Verify svg
if (verify) {
console.debug(`metrics/compute/${login} > verify SVG`)
const libxmljs = (await import("libxmljs")).default
const parsed = libxmljs.parseXml(rendered)
if (parsed.errors.length)
throw new Error(`Malformed SVG : \n${parsed.errors.join("\n")}`)
}
}
//Result
console.debug(`metrics/compute/${login} > success`)
return {rendered, mime}
}
//Internal error
catch (error) {
//User not found
if (((Array.isArray(error.errors))&&(error.errors[0].type === "NOT_FOUND")))
throw new Error("user not found")
//Generic error
throw error
}
}