'use strict'

const id = 'pr-url'

module.exports = {
  id: id
, meta: {
    description: 'enforce PR-URL'
  , recommended: true
  }
, defaults: {}
, options: {}
, validate: (context, rule) => {
    if (!context.prUrl) {
      context.report({
        id: id
      , message: 'Commit must have a PR-URL.'
      , string: context.prUrl
      , line: 0
      , column: 0
      , level: 'fail'
      })
      return
    }
    if (context.prUrl) {
      if (context.prUrl[0] === '#') {
        // see nodejs/node#7d3a7ea0d7df9b6f11df723dec370f49f4f87e99
        // for an example
        var line = -1
        var column = -1
        for (var i = 0; i < context.body.length; i++) {
          const l = context.body[i]
          if (~l.indexOf('PR-URL') && ~l.indexOf(context.prUrl)) {
            line = i
            column = l.indexOf(context.prUrl)
          }
        }
        context.report({
          id: id
        , message: 'PR-URL must be a url, not a pr number.'
        , string: context.prUrl
        , line: line
        , column: column
        , level: 'fail'
        })
      }
    } else {
      context.report({
        id: id
      , message: 'PR-URL is valid'
      , string: context.prUrl
      , level: 'pass'
      })
    }
  }
}