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import { Chart } from "../db/model/Chart"
import { GrapherInterface } from "../grapher/core/GrapherInterface"
import { GrapherPage } from "../site/GrapherPage"
import { renderToHtmlPage } from "../baker/siteRenderers"
import { Post } from "../db/model/Post"
import { urlToSlug, without } from "../clientUtils/Util"
import { isPresent } from "../clientUtils/isPresent"
import {
getRelatedArticles,
getRelatedCharts,
isWordpressAPIEnabled,
isWordpressDBEnabled,
} from "../db/wpdb"
import { getVariableData } from "../db/model/Variable"
import * as fs from "fs-extra"
import { deserializeJSONFromHTML } from "../clientUtils/serializers"
import * as lodash from "lodash"
import { bakeGraphersToPngs } from "./GrapherImageBaker"
import {
OPTIMIZE_SVG_EXPORTS,
BAKED_BASE_URL,
BAKED_GRAPHER_URL,
} from "../settings/serverSettings"
import ProgressBar = require("progress")
import * as db from "../db/db"
import * as glob from "glob"
import { JsonError } from "../clientUtils/owidTypes"
import { isPathRedirectedToExplorer } from "../explorerAdminServer/ExplorerRedirects"
const grapherConfigToHtmlPage = async (grapher: GrapherInterface) => {
const postSlug = urlToSlug(grapher.originUrl || "")
const post = postSlug ? await Post.bySlug(postSlug) : undefined
const relatedCharts =
post && isWordpressDBEnabled
? await getRelatedCharts(post.id)
: undefined
const relatedArticles =
grapher.slug && isWordpressAPIEnabled
? await getRelatedArticles(grapher.slug)
: undefined
return renderToHtmlPage(
<GrapherPage
grapher={grapher}
post={post}
relatedCharts={relatedCharts}
relatedArticles={relatedArticles}
baseUrl={BAKED_BASE_URL}
baseGrapherUrl={BAKED_GRAPHER_URL}
/>
)
}
export const grapherSlugToHtmlPage = async (slug: string) => {
const entity = await Chart.getBySlug(slug)
if (!entity) throw new JsonError("No such chart", 404)
return grapherConfigToHtmlPage(entity.config)
}
const bakeVariableData = async (
bakedSiteDir: string,
variableIds: number[],
outPath: string
): Promise<string> => {
await fs.mkdirp(`${bakedSiteDir}/grapher/data/variables/`)
const vardata = await getVariableData(variableIds)
await fs.writeFile(outPath, JSON.stringify(vardata))
console.log(outPath)
return vardata
}
const bakeGrapherPageAndVariablesPngAndSVGIfChanged = async (
bakedSiteDir: string,
grapher: GrapherInterface
) => {
const htmlPath = `${bakedSiteDir}/grapher/${grapher.slug}.html`
let isSameVersion = false
try {
// If the chart is the same version, we can potentially skip baking the data and exports (which is by far the slowest part)
const html = await fs.readFile(htmlPath, "utf8")
const savedVersion = deserializeJSONFromHTML(html)
isSameVersion = savedVersion?.version === grapher.version
} catch (err) {
if ((err as any).code !== "ENOENT") console.error(err)
}
// Always bake the html for every chart; it's cheap to do so
const outPath = `${bakedSiteDir}/grapher/${grapher.slug}.html`
await fs.writeFile(outPath, await grapherConfigToHtmlPage(grapher))
console.log(outPath)
const variableIds = lodash.uniq(
grapher.dimensions?.map((d) => d.variableId)
)
if (!variableIds.length) return
// Make sure we bake the variables successfully before outputing the chart html
const vardataPath = `${bakedSiteDir}/grapher/data/variables/${variableIds.join(
"+"
)}.json`
if (!isSameVersion || !fs.existsSync(vardataPath))
await bakeVariableData(bakedSiteDir, variableIds, vardataPath)
try {
await fs.mkdirp(`${bakedSiteDir}/grapher/exports/`)
const svgPath = `${bakedSiteDir}/grapher/exports/${grapher.slug}.svg`
const pngPath = `${bakedSiteDir}/grapher/exports/${grapher.slug}.png`
if (
!isSameVersion ||
!fs.existsSync(svgPath) ||
!fs.existsSync(pngPath)
) {
const vardata = JSON.parse(await fs.readFile(vardataPath, "utf8"))
await bakeGraphersToPngs(
`${bakedSiteDir}/grapher/exports`,
grapher,
vardata,
OPTIMIZE_SVG_EXPORTS
)
console.log(svgPath)
console.log(pngPath)
}
} catch (err) {
console.error(err)
}
}
const deleteOldGraphers = async (bakedSiteDir: string, newSlugs: string[]) => {
// Delete any that are missing from the database
const oldSlugs = glob
.sync(`${bakedSiteDir}/grapher/*.html`)
.map((slug) =>
slug.replace(`${bakedSiteDir}/grapher/`, "").replace(".html", "")
)
const toRemove = without(oldSlugs, ...newSlugs)
for (const slug of toRemove) {
console.log(`DELETING ${slug}`)
try {
const paths = [
`${bakedSiteDir}/grapher/${slug}.html`,
`${bakedSiteDir}/grapher/exports/${slug}.png`,
] //, `${BAKED_SITE_DIR}/grapher/exports/${slug}.svg`]
await Promise.all(paths.map((p) => fs.unlink(p)))
paths.map((p) => console.log(p))
} catch (err) {
console.error(err)
}
}
}
export const bakeAllChangedGrapherPagesVariablesPngSvgAndDeleteRemovedGraphers =
async (bakedSiteDir: string) => {
const rows: { id: number; config: any }[] = await db.queryMysql(
`SELECT id, config FROM charts WHERE JSON_EXTRACT(config, "$.isPublished")=true ORDER BY JSON_EXTRACT(config, "$.slug") ASC`
)
const newSlugs = []
await fs.mkdirp(bakedSiteDir + "/grapher")
const progressBar = new ProgressBar(
"BakeGrapherPageVarPngAndSVGIfChanged [:bar] :current/:total :elapseds :rate/s :etas :name\n",
{
width: 20,
total: rows.length + 1,
}
)
for (const row of rows) {
const grapher: GrapherInterface = JSON.parse(row.config)
grapher.id = row.id
newSlugs.push(grapher.slug)
// Avoid baking paths that have an Explorer redirect.
// Redirects take precedence.
if (isPathRedirectedToExplorer(`/grapher/${grapher.slug}`)) {
progressBar.tick({ name: `✅ ${grapher.slug}` })
continue
}
await bakeGrapherPageAndVariablesPngAndSVGIfChanged(
bakedSiteDir,
grapher
)
progressBar.tick({ name: `✅ ${grapher.slug}` })
}
await deleteOldGraphers(bakedSiteDir, newSlugs.filter(isPresent))
progressBar.tick({ name: `✅ Deleted old graphers` })
}
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