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'use strict'
const Koa = require('koa')
const app = new Koa()
const fs = require('fs')
const streamify = require('stream-array')
const send = require('koa-send')
const config = require('./modules/config.js')
const PORT = process.env.PORT || config.server.port
const Router = require('koa-router')
const router = new Router()
const rheo = require('rheo')
const Posts = require('./modules/posts.js')
const posts = Posts.getFolder(config.posts.folder)
const templateReader = template => () =>
fs.createReadStream(`${__dirname}/templates/${template}.html`)
const templates = {
layout: templateReader('layout'),
home: templateReader('home'),
post: templateReader('post'),
taxon: templateReader('taxon')
}
function setTitle (pageTitle) {
return rheo.template(function (s) {
return s
.inner('title', rheo((pageTitle ? ' · ' : '') + config.site.title))
.inner('body header h1', rheo(config.site.title))
})
}
function renderPostListItem (template, [, post]) {
return template
.attribute('a', 'href', () => router.url('post', post.basename))
.inner('a', () => rheo(post.data.get('title')))
}
function toArrayStream (iterator) {
return streamify(Array.from(iterator.entries()))
}
function showPage (name) {
return function (els) {
return rheo(templates[name]())
}
}
const postsStream = toArrayStream(posts)
router.get('home', '/', async function (ctx, next) {
ctx.set('Content-Type', 'text/html')
ctx.body = templates
.layout()
.pipe(rheo())
.outer('main', showPage('home'))
.inner('.posts', function (postsTemplate) {
return postsStream.pipe(postsTemplate.map(renderPostListItem))
})
.pipe(setTitle())
.render()
})
router.get('post', '/post/:filename', async function (ctx, next) {
ctx.assert(posts.has(ctx.params.filename), 404, 'Post not found')
const post = posts.get(ctx.params.filename)
post.body = Posts.render(post)
ctx.set('Content-Type', 'text/html')
ctx.body = templates
.layout()
.pipe(rheo())
.inner('main', showPage('post'))
.inner('article h1', rheo(post.data.get('title')))
.inner('article main', rheo(post.body))
.pipe(setTitle())
.render()
})
const taxonomies = Posts.taxonomise(config.taxonomies, posts)
for (let [term, items] of taxonomies) {
router.get(`taxon-${term}`, `/${term}/:value`, async function (ctx, next) {
const value = ctx.params.value
ctx.assert(
items.has(ctx.params.value),
404,
`Could not find ${term} ${value}`
)
ctx.set('Content-Type', 'text/html')
ctx.body = templates
.layout()
.pipe(rheo())
.inner('main', showPage('taxon'))
.inner('h1', rheo(config.site.title))
.inner('.posts', function (postsTemplate) {
return toArrayStream(items.get(value)).pipe(
postsTemplate.map(renderPostListItem)
)
})
.pipe(setTitle())
.render()
})
}
app.use(router.routes()).use(router.allowedMethods())
const prefix = /^\/static\//
app.use(async function (ctx) {
if (prefix.test(ctx.path)) {
await send(ctx, ctx.path.replace(prefix, ''), {
root: './static'
})
}
})
module.exports = app
if (require.main === module) {
app.listen(PORT, () => {
console.log(`App listening on port ${PORT}`)
})
}
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