// Stub emit function to please TS.
const emit = (key, value:any) => {
  return true;
}

export const SharedQueries = {

  conflicts: {
    map: function (doc) {
      if (doc._conflicts) {
        emit(true, true)
      }
    }.toString()
  },

  responsesByFormId: {
    map: function(doc) {
      if (doc.form && doc.form.id) {
        emit(doc.form.id, true)
      }
    }.toString()
  },

  responsesByStartUnixTime: {
    map: function(doc) {
      if (doc.collection === "TangyFormResponse") {
        return emit(doc.startUnixtime, true)
      }
    }.toString()
  },

  responsesByUserProfileId: {
    map: function(doc) {
      if (doc.collection === "TangyFormResponse") {
        if (doc.form && doc.form.id === 'user-profile') {
          return emit(doc._id, true)
        }
        var inputs = doc.items.reduce(function(acc, item) { return acc.concat(item.inputs)}, [])
        var userProfileInput = null
        inputs.forEach(function(input) {
          if (input.name === 'userProfileId') {
            userProfileInput = input
          }
        })
        if (userProfileInput) {
          emit(userProfileInput.value, true)
        }
      }
    }.toString()
  },

  unpaid: {
    map: function(doc) {
      if (doc.collection === "TangyFormResponse" && !doc.paid) {
        emit(true, true)
      }
    }.toString()
  },

  responsesByUserProfileShortCode: {
    map: function(doc) {
      if (doc.collection === "TangyFormResponse") {
        if (doc.form && doc.form.id === 'user-profile') {
          return emit(doc._id.substr(doc._id.length-6, doc._id.length), true)
        }
        var inputs = doc.items.reduce(function(acc, item) { return acc.concat(item.inputs)}, [])
        var userProfileInput = null
        inputs.forEach(function(input) {
          if (input.name === 'userProfileId') {
            userProfileInput = input
          }
        })
        if (userProfileInput) {
          emit(userProfileInput.value.substr(userProfileInput.value.length-6, userProfileInput.value.length), true)
        }
      }
    }.toString()
  }

}