start.js

const express = require('express')
const fs = require('fs')
const app = express()
const port = process.env.PORT || 3100
var path = require('path');
var nunjucks = require('nunjucks')

function slugify(str) {
  return str.replace(/[.,-\/#!$%\^&\*;:{}=\-_`~()’]/g,"").replace(/ +/g,'_').toLowerCase();
}

app.locals.phases = [
  {
    name: "unknown",
    class: "",
    projects_count: 0
  },
  {
    name: "Alpha",
    class: "purple",
    projects_count: 0
  },
  {
    name: "Beta",
    class: "pink",
    projects_count: 0
  },
  {
    name: "Live",
    class: "green",
    projects_count: 0
  },
  {
    name: "Retired",
    class: "grey",
    projects_count: 0
  }
]

app.locals.themes = [
  'Benefits',
  'Births, deaths, marriages and care',
  'Business and self-employed',
  'Childcare and parenting',
  'Citizenship and living in the UK',
  'Crime, justice and the law',
  'Driving and transport',
  'Education, training and skills',
  'Employing people',
  'Environment and countryside',
  'Housing and local services',
  'Government Internal',
  'Health',
  'Money and tax',
  'Passports, travel and living abroad',
  'Visas and immigration',
  'Working, jobs and pensions',
  'Coronavirus (COVID-19)',
];

app.locals.organisations = [
  {"name": 'Cabinet Office'},
  {"name": 'Department for Business and Trade'},
  {"name": 'Department for Education'},
  {"name": 'Department for Environment, Food & Rural Affairs'},
  {"name": 'Department for International Trade'},
  {"name": 'Ministry of Housing, Communities & Local Government'},
  {"name": 'Department for Transport'},
  {"name": 'Department for Work and Pensions'},
  {"name": 'Department of Health and Social Care'},
  {"name": 'Department for Energy Security and Net Zero'},
  {"name": 'Foreign, Commonwealth & Development Office'},
  {"name": 'Home Office'},
  {"name": 'Ministry of Defence'},
  {"name": 'Ministry of Justice'},
  {"name": 'HM Revenue and Customs'},
  {"name": 'Environment Agency'},
  {"name": 'NHS England'},
  {"name": 'Companies House'},
  {"name": 'Ofsted'},
  {"name": 'Insolvency Service'},
  {"name": 'Land Registry'}
]

app.locals.allEvents = []

app.locals.projects = []

fs.readdirSync(__dirname + '/app/services/').forEach(function(filename) {


  if (filename != '_template.json' && filename.endsWith('.json')) {
    var project = JSON.parse(fs.readFileSync(__dirname + '/app/services/' + filename).toString());

    project.filename = filename
    project.slug = filename.replace('.json', '');
    app.locals.projects.push(project)

    if (!Array.isArray(project.organisation)) {
      project.organisation = [project.organisation]
    }

    if (!Array.isArray(project['start-page'])) {
      if (project['start-page']) {
        project['start-page'] = [project['start-page']]
      } else {
        project['start-page'] = []
      }
    }

    for (organisation of project.organisation) {
      if (!app.locals.organisations.find(function(org) { return org.name == organisation})) {
        app.locals.organisations.push({
          "name": organisation,
          "slug": slugify(organisation)
        })
      }
    }

    if (fs.existsSync(__dirname + '/app/assets/images/service-screenshots/' + project.slug + '.png')) {
      project.screenshot = true
    }

    if (project.timeline) {
      for (item of project.timeline.items) {
        app.locals.allEvents.push({
          "service": {
            "name": project.name,
            "slug": project.slug
          },
          "date": item.date,
          "label": item.label
        })
      }
    }

    var phase = app.locals.phases.filter(function(p) { return p.name == project.phase })

    if (phase.length > 0) {
      phase[0].projects_count += 1;
    }
  }
})

for (organisation of app.locals.organisations) {
  organisation.slug = slugify(organisation.name)
  organisation.services = app.locals.projects.filter(function(service) {
    return service.organisation.includes(organisation.name)
  } )
}

app.locals.verbs = []
app.locals.domains = []

const ignoredVerbs = ["gov.uk", "trade", "home", "flood", "electronic", "digital", "registered", "application", "online", "payment", "passport", "vehicle", "the", "civil", "supplier"]

for (project of app.locals.projects) {
    const verb = project.name.split(" ")[0].toLowerCase()

    if (ignoredVerbs.includes(verb)) { continue }

    let existingVerb = app.locals.verbs.find(v => v.name == verb)

    if (!existingVerb) {
      existingVerb = {name: verb, services: [], count: 0}
      app.locals.verbs.push(existingVerb)
    }

    existingVerb.services.push(project)
    existingVerb.count += 1


    if (project.liveservice) {
      let url = new URL(project.liveservice)
      let hostname = url.hostname
      hostname = hostname.replace(/www\./, '')

      if (hostname == 'gov.uk') { continue }
      if (project.phase == 'retired') { continue }

      let existingDomain = app.locals.domains.find(domain => domain.domain == hostname)
      if (existingDomain) {
        existingDomain.services.push(
          {slug: project.slug, name: project.name}
        )
      } else {
        app.locals.domains.push({
          domain: hostname,
          services: [
            {slug: project.slug, name: project.name}
          ]
        })
      }
    }
}

app.use('/images', express.static(path.join(__dirname, 'app/assets/images')))

app.use('/', express.static(path.join(__dirname, 'static')))

var env = nunjucks.configure([
  'app/views/',
  'node_modules/govuk-frontend/dist',
  'node_modules/@x-govuk/govuk-prototype-components'
], {
    autoescape: true,
    express: app,
    watch: (process.env.ENV === 'development')
});

env.addFilter('slugify', slugify);

env.addFilter('formatdate', function(str) {
  var date = new Date(str);

  var monthNames = {
    0: "January",
    1: "February",
    2: "March",
    3: "April",
    4: "May",
    5: "June",
    6: "July",
    7: "August",
    8: "September",
    9: "October",
    10: "November",
    11: "December"
  }

  return `${date.getDate()} ${monthNames[date.getMonth()]} ${date.getFullYear()}`
});

env.addFilter('find', function (array, key, value) {
  return array.find((item) => item[key] === value)
});

app.get('/projects/:slug', function (req, res) {
  project = req.app.locals.projects.filter(function(p) { return p.slug == req.params.slug})[0]
  res.render('project.html', {
    'project': project
  });
});

app.get('/', function(req, res) {
    res.render(path.join(__dirname, 'app/views/index.html'))
});

app.get('/topic', function(req, res) {
    res.render(path.join(__dirname, 'app/views/topic.html'))
});

app.get('/organisation', function(req, res) {
    res.render('organisations.html')
});

app.get('/top-75', function(req, res) {
  res.render('top-75.html')
});

app.get('/govuk-one-login', function(req, res) {
  res.render('govuk-one-login.html')
});

app.get('/original-25-exemplars', function(req, res) {
  const exemplars = {
    "cabinet_office": [
      "register-to-vote"
    ],
    "Department for Business Innovation & Skills": [
      "find-apprenticeship",
      "redundancy-payments",
      "patent",
      "find-property-information",
      "student-finance-account",
    ],
    "department_for_environment_food_rural_affairs": [
      "waste-carriers-registration",
      "rural-payments",
    ],
    "department_for_transport": [
      "view-driving-record",
      "personalised-vehicle-registration",
      "register-vehicle",
    ],
    "department_for_work_and_pensions": [
      "carers-allowance",
      "personal-independence-payment",
      "universal-credit",
    ],
    "hm_revenue_and_customs": [
      "company-car-tax",
      "pay-self-assessment",
      "tax-business-account",
      "agent-services-account",
    ],
    "home_office": [
      "registered-traveller",
      "passport",
      "visas-and-immigration",
    ],
    "ministry_of_justice": [
      "money-claims",
      "employment-tribunal",
      "prison-visits",
      "lasting-power-of-attorney"
    ]
  }

  res.render('original-25-exemplars.html', {exemplars})
});

app.get('/organisation/:slug', function(req, res) {
  const organisation = app.locals.organisations.find(function(org) { return org.slug == req.params.slug} )
  if (organisation) {
    res.render('organisation.html', {organisation})
  } else {
    res.status(404).send("Page not found")
  }
});

app.get('/contribute', function(req, res) {
    res.render('contribute.html')
});

app.get('/verbs', function(req, res) {
  res.render('verbs.html')
});

app.get('/screenshots', function(req, res) {
  res.render('screenshots.html')
});

app.get('/domains', function(req, res) {
  res.render('domains.html')
});

app.get('/source-code', function(req, res) {
  res.render('source-code.html')
});

app.get('/data', function(req, res) {
  res.render('data.html')
});

app.get('/data.json', function(req, res) {
  // res.setHeader('Content-Type', 'application/json');
  res.json({services: app.locals.projects})
});


app.listen(port, () => console.log(`Example app listening at http://localhost:${port}`))