/**Template processor */
export default async function({login, q}, {data, rest, graphql, queries, account}, {pending, imports}) {
  //Check arguments
  const {repo} = q
  if (!repo) {
    console.debug(`metrics/compute/${login}/${repo} > error, repo was undefined`)
    data.errors.push({error:{message:'You must pass a "repo" argument to use this template'}})
    return imports.plugins.core(...arguments)
  }
  console.debug(`metrics/compute/${login}/${repo} > switching to mode ${account}`)

  //Retrieving single repository
  console.debug(`metrics/compute/${login}/${repo} > retrieving single repository ${repo}`)
  const {[account === "bypass" ? "user" : account]:{repository}} = await graphql(queries.base.repository({login, repo, account}))
  data.user.repositories.nodes = [repository]
  data.repo = repository

  //Contributors and sponsors
  data.repo.contributors = {totalCount:(await rest.repos.listContributors({owner:data.repo.owner.login, repo})).data.length}
  data.repo.sponsorshipsAsMaintainer = data.user.sponsorshipsAsMaintainer

  //Get commit activity
  console.debug(`metrics/compute/${login}/${repo} > querying api for commits`)
  const commits = []
  for (let page = 1; page < 100; page++) {
    console.debug(`metrics/compute/${login}/${repo} > loading page ${page}`)
    try {
      const {data} = await rest.repos.listCommits({owner:login, repo, per_page:100, page})
      if (!data.length) {
        console.debug(`metrics/compute/${login}/${repo} > no more page to load`)
        break
      }
      commits.push(...data)
    }
    catch (error) {
      if (/Git Repository is empty/.test(error))
        break
      throw error
    }
  }
  console.debug(`metrics/compute/${login}/${repo} > ${commits.length} commits loaded`)

  //Override creation date, disk usage and website url
  data.user.createdAt = repository.createdAt
  data.user.repositories.totalDiskUsage = repository.diskUsage
  data.user.websiteUrl = repository.homepageUrl

  //Override contributions calendar
  const days = 14
  //Compute relative date for each contribution
  const now = new Date()
  now.setHours(0, 0, 0, 0)
  const contributions = commits.map(({commit}) => Math.abs(Math.ceil((now - new Date(commit.committer.date)) / (24 * 60 * 60 * 1000))))
  //Count contributions per relative day
  const calendar = new Array(days).fill(0)
  for (const day of contributions)
    calendar[day]++
  calendar.splice(days)
  const max = Math.max(...calendar)
  //Override contributions calendar
  data.user.calendar.contributionCalendar.weeks = calendar.map(commit => ({contributionDays:{color:commit ? `var(--color-calendar-graph-day-L${Math.ceil(commit / max / 0.25)}-bg)` : "var(--color-calendar-graph-day-bg)"}}))

  //Override plugins parameters
  q["projects.limit"] = 0

  //Core
  await imports.plugins.core(...arguments)
  await Promise.all(pending)

  //Set repository name
  data.user.name = `${data.user.login}/${repo}`

  //Reformat projects names
  if (data.plugins.projects)
    data.plugins.projects.list?.map(project => project.name = project.name.replace(`(${login}/${repo})`, "").trim())
}
