/*
 * SPDX-FileCopyrightText: 2021 Splunk, Inc. <sales@splunk.com>
 * SPDX-License-Identifier: LicenseRef-Splunk-8-2021
 *
 */

require([
  'splunkjs/ready!',
  'splunkjs/mvc/simplexml/ready!',
  'underscore',
  'jquery',
  '../app/TA-unix/components/js_sdk_extensions/scripted_inputs',
  '../app/TA-unix/components/js_sdk_extensions/monitor_inputs'
], function (mvc, ignored, _, $, sdkx_scripted_inputs, sdkx_monitor_inputs) {
  var ScriptedInputs = sdkx_scripted_inputs.ScriptedInputs
  var MonitorInputs = sdkx_monitor_inputs.MonitorInputs

  var service = mvc.createService()
  var cleaned_data = {}

  // -------------------------------------------------------------------------
  // Prerequisite Checks

  // Error if running on unrecognized unix
  //
  service.get('/services/SetupService', cleaned_data, function (err, response) {
    if (err) {
      console.error('Problem fetching data', err)
    } else if (response.status === 200) {
      var isRecognizedUnix = JSON.parse(response.data)
      if (!isRecognizedUnix) {
        $('#not-unix-error').show()
        $('#save-btn').addClass('disabled')
      }
    } else {
      console.error('Problem checking whether splunkweb is running on Unix.')
    }
  })

  // -------------------------------------------------------------------------
  // Populate Tables

  var INPUT_ROW_TEMPLATE = _.template(
    '<tr class="input" data-fullname="<%- fullname %>">\n' +
      '    <td><%- name %></td>\n' +
      '    <td><input class="enable-btn"  type="radio" name="<%- name %>" <% if (enabled)  { %>checked="checked"<% } %> /></td>\n' +
      '    <td><input class="disable-btn" type="radio" name="<%- name %>" <% if (!enabled) { %>checked="checked"<% } %> /></td>\n' +
      '<% if (interval != -1) { %>\n' +
      '    <td><input class="interval-field" type="number" value="<%- interval %>" /></td>\n' +
      '<% } %>\n' +
      '<% if (index != -1) { %>\n' +
      '   <% if (index == "") { %>\n' +
      '       <td>' +
      '       <splunk-search-dropdown name="metric_index_selector" id="index-selection" label-field="title" value-field="title" search="| rest services/data/indexes  datatype=metric | dedup title | search title!=_*  | table title"/>' +
      '       </td>\n' +
      '   <% }else { %>\n' +
      '       <td>' +
      '       <splunk-search-dropdown name="metric_index_selector" id="index-selection" label-field="title" value-field="title" value="<%- index %>" search="| rest services/data/indexes  datatype=metric | dedup title | search title!=_*  | table title"/>' +
      '       </td>\n' +
      '   <% } %>\n' +
      '<% } %>\n' +
      '</tr>\n'
  )

  // Populate monitor input table
  var monitorInputs = {}
  new MonitorInputs(service, {
    owner: '-',
    app: 'TA-unix',
    sharing: 'app'
  }).fetch(function (err, inputs) {
    var inputsList = _.filter(inputs.list(), function (input) {
      return input.namespace.app === 'TA-unix'
    })

    _.each(inputsList, function (input) {
      $('#monitor-input-table').append(
        $(
          INPUT_ROW_TEMPLATE({
            fullname: input.name,
            name: input.name,
            enabled: !input.properties().disabled,
            interval: -1,
            index: -1
          })
        )
      )
      monitorInputs[input.name] = input
    })
  })

  // Populate scripted Event inputs table
  var scriptedMetricInputs = {}
  new ScriptedInputs(service, {
    owner: '-',
    app: 'TA-unix',
    sharing: 'app'
  }).fetch(function (err, inputs) {
    var inputsList = _.filter(inputs.list(), function (input) {
      var input_name = input.name
        .substring(input.name.lastIndexOf('/') + 1)
        .split('_')
      return (
        input.namespace.app === 'TA-unix' &&
        input_name[input_name.length - 1] === 'metric.sh'
      )
    })

    _.each(inputsList, function (input) {
      $('#scripted-metric-input-table').append(
        $(
          INPUT_ROW_TEMPLATE({
            fullname: input.name,
            name: input.name.substring(input.name.lastIndexOf('/') + 1),
            enabled: !input.properties().disabled,
            interval: input.properties().interval,
            index:
              input.properties().index === 'default'
                ? ''
                : input.properties().index
          })
        )
      )
      scriptedMetricInputs[input.name] = input
    })
  })

  // Populate scripted Event inputs table
  var scriptedEventInputs = {}
  new ScriptedInputs(service, {
    owner: '-',
    app: 'TA-unix',
    sharing: 'app'
  }).fetch(function (err, inputs) {
    var inputsList = _.filter(inputs.list(), function (input) {
      var input_name = input.name
        .substring(input.name.lastIndexOf('/') + 1)
        .split('_')
      return (
        input.namespace.app === 'TA-unix' &&
        input_name[input_name.length - 1] !== 'metric.sh'
      )
    })

    _.each(inputsList, function (input) {
      $('#scripted-event-input-table').append(
        $(
          INPUT_ROW_TEMPLATE({
            fullname: input.name,
            name: input.name.substring(input.name.lastIndexOf('/') + 1),
            enabled: !input.properties().disabled,
            interval: input.properties().interval,
            index: -1
          })
        )
      )
      scriptedEventInputs[input.name] = input
    })
  })

  // -------------------------------------------------------------------------
  // Buttons

  // Enable All button
  $('.enable-all-btn').click(function (e) {
    e.preventDefault()
    var table = $(e.target).closest('.input-table')
    $('.input .enable-btn', table).prop('checked', true)
  })

  // Disable All button
  $('.disable-all-btn').click(function (e) {
    e.preventDefault()
    var table = $(e.target).closest('.input-table')
    $('.input .disable-btn', table).prop('checked', true)
  })

  // Save button
  $('#save-btn').click(function (e) {
    e.preventDefault()
    if ($('#save-btn').hasClass('disabled')) {
      return
    }

    var savesPending = 0
    var saveErrors = []

    // Save monitor inputs
    _.each($('#monitor-input-table .input'), function (inputElem) {
      var fullname = $(inputElem).data('fullname')
      var enabled = $('.enable-btn', inputElem).prop('checked')

      var input = monitorInputs[fullname]

      savesPending += 1
      input.update(
        {
          disabled: !enabled
        },
        saveDone
      )
    })

    var invalidIndex = 0 // invalid index flag
    var invalidInterval = 0 // invalid interval flag
    var numbers = /^[0-9]+$/
    // Save scripted Metric inputs
    _.each($('#scripted-metric-input-table .input'), function (inputElem) {
      var fullname = $(inputElem).data('fullname')
      var enabled = $('.enable-btn', inputElem).prop('checked')
      var interval = $('.interval-field', inputElem).val()
      var index = $('#index-selection', inputElem)[0].innerText
      // Handling internationalization transalation due to ticket ADDON-30736
      if (
        index.includes('...') ||
        index.includes('Search produced no results.')
      ) {
        index = enabled === true ? index : '' // Setting index="" if input is disable, so it allows to save.
        if (enabled) {
          invalidIndex = 1
        }
      }
      if (!interval.match(numbers)) {
        // Check for the interval, Interval must contain only numeric values
        if (interval.charAt(0) === '-' || interval.includes('.')) {
          interval = 'invalid'
        }
        invalidInterval = 1
      }
      var input = scriptedMetricInputs[fullname]
      savesPending += 1
      input.update(
        {
          disabled: !enabled,
          interval: interval,
          index: index
        },
        saveDone
      )
    })

    // Save scripted Event inputs
    _.each($('#scripted-event-input-table .input'), function (inputElem) {
      var fullname = $(inputElem).data('fullname')
      var enabled = $('.enable-btn', inputElem).prop('checked')
      var interval = $('.interval-field', inputElem).val()
      if (!interval.match(numbers)) {
        if (interval.charAt(0) === '-' || interval.includes('.')) {
          interval = 'invalid'
        }
        invalidInterval = 1
      }
      var input = scriptedEventInputs[fullname]
      savesPending += 1
      input.update(
        {
          disabled: !enabled,
          interval: interval
        },
        saveDone
      )
    })

    //Set is_configured=true in app.conf
    service.post('/services/SetupService', cleaned_data, function (
      err,
      response
    ) {
      if (err) {
        console.log('Error saving configuration in app.conf')
      }
    })

    // After saves are completed...
    function saveDone (err) {
      $('#index-not-selected-error').hide()
      $('#generic-save-error').hide()
      $('#invalid-interval-error').hide()
      if (err) {
        saveErrors.push(err)
      }

      savesPending -= 1
      if (savesPending > 0) {
        return
      }
      if (saveErrors.length === 0) {
        // Save successful. Provide feedback in form of page reload.
        window.location.reload()
      } else {
        // invalid index or interval failure
        if (invalidIndex || invalidInterval) {
          if (invalidInterval) {
            invalidInterval = 0
            // invalid interval failure
            $('#invalid-interval-error').show()
          }
          if (invalidIndex) {
            invalidIndex = 0
            // invalid index failure
            $('#index-not-selected-error').show()
          }
        } else {
          // Unexpected failure.
          $('#generic-save-error').show()
        }

        // (Allow Support to debug if necessary.)
        console.log('Errors while saving inputs:')
        console.log(saveErrors)
      }
    }
  })
})