'use strict'

const id = 'metadata-end'

module.exports = {
  id: id
, meta: {
    description: 'enforce that metadata is at the end of commit messages'
  , recommended: true
  }
, defaults: {}
, options: {}
, validate: (context, rule) => {
    const parsed = context.toJSON()
    const body = parsed.body
    const end = parsed.metadata.end
    if (end < body.length) {
      const extra = body.slice(end + 1)
      let lineNum = end + 1
      for (let i = 0; i < extra.length; i++) {
        if (extra[i]) {
          lineNum += i
          break
        }
      }

      if (lineNum !== end + 1) {
        context.report({
          id: id
        , message: 'commit metadata at end of message'
        , string: body[lineNum]
        , line: lineNum
        , column: 0
        , level: 'fail'
        })
        return
      }
    }

    context.report({
      id: id
    , message: 'metadata is at end of message'
    , string: ''
    , level: 'pass'
    })
  }
}