/*

 MIT License

 Copyright (c) 2022 Looker Data Sciences, Inc.

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 copies of the Software, and to permit persons to whom the Software is
 furnished to do so, subject to the following conditions:

 The above copyright notice and this permission notice shall be included in all
 copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 SOFTWARE.

 */

// IDs for content to demonstrate are configured in demo_config.ts

import type {
  SessionStatus,
  ILookerConnection,
  ILookerEmbedDashboard,
  ILookerEmbedExplore,
  ILookerEmbedLook,
} from '../src/index'
import { getEmbedSDK } from '../src/index'
import type { RuntimeConfig } from './demo_config'
import {
  getConfiguration,
  updateConfiguration,
  loadConfiguration,
  resetConfiguration,
} from './demo_config'

let currentDashboard: ILookerEmbedDashboard | undefined
let currentLook: ILookerEmbedLook | undefined
let currentExplore: ILookerEmbedExplore | undefined

const initializeRunAllButton = () => {
  // Add a listener to the "Run All" button and send 'xxxx:run' messages when clicked
  const runAllButton = document.querySelector('#run-all')
  if (runAllButton) {
    runAllButton.addEventListener('click', () => {
      if (currentDashboard) {
        currentDashboard.run()
      }
      if (currentLook) {
        currentLook.run()
      }
      if (currentExplore) {
        currentExplore.run()
      }
    })
  }
}

/**
 * Set up the dashboard after the SDK connects
 */
const setupDashboard = (connection: ILookerConnection) => {
  const dashboard = connection.asDashboardConnection()
  currentDashboard = dashboard

  // Add a listener to the dashboard's "Run" button and send a 'dashboard:run' message when clicked
  const runButton = document.querySelector('#run-dashboard')
  if (runButton) {
    runButton.addEventListener('click', () => dashboard.run())
  }

  // Add a listener to the dashboard's "Send session token" button and send a 'session:token' message when clicked
  const stopButton = document.querySelector('#stop-dashboard')
  if (stopButton) {
    stopButton.addEventListener('click', () => dashboard.stop())
  }

  // Add a listener to the dashboard's "Edit" button and send a 'dashboard:edit' message when clicked
  const editButton = document.querySelector('#edit-dashboard')
  if (editButton) {
    editButton.addEventListener('click', () => dashboard.edit())
  }

  // Add a listener to the state selector and update the dashboard filters when changed
  const stateFilter = document.querySelector('#state')
  if (stateFilter) {
    stateFilter.addEventListener('change', (event) => {
      dashboard.updateFilters({
        'State / Region': (event.target as HTMLSelectElement).value,
      })
    })
  }
}

/**
 * Set up the look after the SDK connects.
 */
const setupLook = (connection: ILookerConnection) => {
  const look = connection.asLookConnection()
  currentLook = look

  // Add a listener to the look's "Run" button and send a 'look:run' message when clicked
  const runButton = document.querySelector('#run-look')
  if (runButton) {
    runButton.addEventListener('click', () => look.run())
  }

  // Add a listener to the state selector and update the look filters when changed
  const stateFilter = document.querySelector('#state')
  if (stateFilter) {
    stateFilter.addEventListener('change', (event) => {
      look.updateFilters({
        'users.state': (event.target as HTMLSelectElement).value,
      })
    })
  }
}

/**
 * Set up the explore after the SDK connects.
 */
const setupExplore = (connection: ILookerConnection) => {
  const explore = connection.asExploreConnection()
  currentExplore = explore

  // Add a listener to the explore's "Run" button and send a 'explore:run' message when clicked
  const runButton = document.querySelector('#run-explore')
  if (runButton) {
    runButton.addEventListener('click', () => explore.run())
  }

  // Add a listener to the state selector and update the look filters when changed
  const stateFilter = document.querySelector('#state')
  if (stateFilter) {
    stateFilter.addEventListener('change', (event) => {
      explore.updateFilters({
        'users.state': (event.target as HTMLSelectElement).value,
      })
    })
  }
}

/**
 * Update the status for each embedded element
 */
const updateStatus = (selector: string, state: string) => {
  const stateElement = document.querySelector(selector)
  if (stateElement) {
    stateElement.textContent = state
  }
}

/**
 * A canceller callback can prevent the default behavior of links on a dashboard.
 * In this instance, if the click will navigate to a new window, the navigation is
 * cancelled.
 */
const preventNavigation = (event: any): any => {
  const { preventNavigation } = getConfiguration()
  if (preventNavigation) {
    updateStatus('#dashboard-state', `${event.label} clicked`)
    return { cancel: !event.modal }
  }
  return {}
}

/**
 * Initialize the show dashboard configuration checkbox.
 */
const initializeShowDashboardCheckbox = () => {
  const cb = document.getElementById('showDashboard') as HTMLInputElement
  if (cb) {
    const { dashboardId, showDashboard } = getConfiguration()
    if (dashboardId) {
      cb.checked = showDashboard
      cb.addEventListener('change', (event: any) => {
        const runtimeConfig = getConfiguration()
        runtimeConfig.showDashboard = event.target.checked
        updateConfiguration(runtimeConfig)
        renderDashboard(runtimeConfig)
      })
    } else {
      currentDashboard = undefined
      cb.parentElement!.style.display = 'none'
    }
  }
}

/**
 * Initialize the show look configuration checkbox.
 */
const initializeShowLookCheckbox = () => {
  const cb = document.getElementById('showLook') as HTMLInputElement
  if (cb) {
    const { lookId, showLook } = getConfiguration()
    if (lookId) {
      cb.checked = showLook
      cb.addEventListener('change', (event: any) => {
        const runtimeConfig = getConfiguration()
        runtimeConfig.showLook = event.target.checked
        updateConfiguration(runtimeConfig)
        renderLook(runtimeConfig)
      })
    } else {
      currentLook = undefined
      cb.parentElement!.style.display = 'none'
    }
  }
}

/**
 * Initialize the show explore configuration checkbox.
 */
const initializeShowExploreCheckbox = () => {
  const cb = document.getElementById('showExplore') as HTMLInputElement
  if (cb) {
    const { exploreId, showExplore } = getConfiguration()
    if (exploreId) {
      cb.checked = showExplore
      cb.addEventListener('change', (event: any) => {
        const runtimeConfig = getConfiguration()
        runtimeConfig.showExplore = event.target.checked
        updateConfiguration(runtimeConfig)
        renderExplore(runtimeConfig)
      })
    } else {
      currentExplore = undefined
      cb.parentElement!.style.display = 'none'
    }
  }
}

/**
 * Initialize the show extension configuration checkbox.
 */
const initializeShowExtensionCheckbox = () => {
  const cb = document.getElementById('showExtension') as HTMLInputElement
  if (cb) {
    const { extensionId, showExtension } = getConfiguration()
    if (extensionId) {
      cb.checked = showExtension
      cb.addEventListener('change', (event: any) => {
        const runtimeConfig = getConfiguration()
        runtimeConfig.showExtension = event.target.checked
        updateConfiguration(runtimeConfig)
        renderExtension(runtimeConfig)
      })
    } else {
      cb.parentElement!.style.display = 'none'
    }
  }
}

/**
 * Initialize the use cookieless configuration checkbox.
 */
const initializeUseCookielessCheckbox = () => {
  const cb = document.getElementById('useCookieless') as HTMLInputElement
  if (cb) {
    const { embedType } = getConfiguration()
    cb.checked = embedType === 'cookieless'
    cb.addEventListener('change', (event: any) => {
      const runtimeConfig = getConfiguration()
      runtimeConfig.embedType = event.target.checked ? 'cookieless' : 'signed'
      updateConfiguration(runtimeConfig)
      location.reload()
    })
  }
}

/**
 * Initialize the prevent navigation configuration checkbox.
 */
const initializePreventNavigationCheckbox = () => {
  const cb = document.getElementById('preventNavigation') as HTMLInputElement
  if (cb) {
    const { preventNavigation } = getConfiguration()
    cb.checked = preventNavigation
    cb.addEventListener('change', (event: any) => {
      const runtimeConfig = getConfiguration()
      runtimeConfig.preventNavigation = event.target.checked
      updateConfiguration(runtimeConfig)
    })
  }
}

/**
 * Initialize the use dynamic heights configuration checkbox.
 */
const initializeUseDynamicHeightsCheckbox = () => {
  const cb = document.getElementById('useDynamicHeights') as HTMLInputElement
  if (cb) {
    const { useDynamicHeights } = getConfiguration()
    cb.checked = useDynamicHeights
    cb.addEventListener('change', (event: any) => {
      const runtimeConfig = getConfiguration()
      runtimeConfig.useDynamicHeights = event.target.checked
      updateConfiguration(runtimeConfig)
      location.reload()
    })
  }
}

/**
 * Initialize the reset configuration button.
 */
const initializeResetConfigButton = () => {
  const b = document.getElementById('reset-config') as HTMLInputElement
  if (b) {
    b.addEventListener('click', () => {
      resetConfiguration()
      location.reload()
    })
  }
}

/**
 * Initialize controls.
 */
const initializeControls = () => {
  initializeRunAllButton()
  initializeShowDashboardCheckbox()
  initializeShowLookCheckbox()
  initializeShowExploreCheckbox()
  initializeShowExtensionCheckbox()
  initializePreventNavigationCheckbox()
  initializeUseCookielessCheckbox()
  initializeUseDynamicHeightsCheckbox()
  initializeResetConfigButton()
}

/**
 * Monitor cookieless embed session status. A simple implementation
 * that displays a message.
 */
const processSessionStatus = (event: SessionStatus, selector: string) => {
  const { expired, interrupted } = event
  if (expired) {
    updateStatus(selector, 'Session has expired')
  } else if (interrupted) {
    updateStatus(selector, 'Session has been interrupted')
  }
}

/**
 * Render a dashboard using the Embed SDK. When active this sets up listeners
 * for events that can be sent by the Looker embedded UI.
 */
const renderDashboard = (runtimeConfig: RuntimeConfig) => {
  if (runtimeConfig.showDashboard) {
    document.querySelector<HTMLDivElement>('#demo-dashboard')!.style.display =
      ''
    getEmbedSDK()
      .createDashboardWithId(runtimeConfig.dashboardId)
      // When true scrolls the top of the IFRAME into view
      .withDialogScroll(runtimeConfig.useDynamicHeights)
      // When true updates the IFRAME height to reflect the height of the
      // dashboard
      .withDynamicIFrameHeight(runtimeConfig.useDynamicHeights)
      // When true monitors the scroll position of the hosting window
      // and sends it to the Looker IFRAME. The Looker IFRAME uses the
      // information to position dialogs correctly.
      .withScrollMonitor(runtimeConfig.useDynamicHeights)
      // Allow fullscreen tile visualizations
      .withAllowAttr('fullscreen')
      // Append to the #dashboard element
      .appendTo('#dashboard')
      // Listen to messages to display progress
      .on('dashboard:loaded', () => updateStatus('#dashboard-state', 'Loaded'))
      .on('dashboard:run:start', () =>
        updateStatus('#dashboard-state', 'Running')
      )
      .on('dashboard:run:complete', () =>
        updateStatus('#dashboard-state', 'Done')
      )
      // Listen to messages that change dashboard
      .on('dashboard:edit:start', () =>
        updateStatus('#dashboard-state', 'Editing')
      )
      .on('dashboard:edit:cancel', () =>
        updateStatus('#dashboard-state', 'Editing cancelled')
      )
      .on('dashboard:save:complete', () =>
        updateStatus('#dashboard-state', 'Saved')
      )
      .on('dashboard:delete:complete', () =>
        updateStatus('#dashboard-state', 'Deleted')
      )
      .on('session:status', (event: SessionStatus) => {
        processSessionStatus(event, '#dashboard-state')
      })
      // Listen to messages to prevent the user from navigating away
      .on('drillmenu:click', preventNavigation)
      .on('drillmodal:explore', preventNavigation)
      .on('dashboard:tile:explore', preventNavigation)
      .on('dashboard:tile:view', preventNavigation)
      // Give the embedded content a class for styling purposes
      .withClassName('looker-embed')
      // Set the initial filters
      .withFilters({ 'State / Region': 'California' })
      // Finalize the build
      .build()
      // Connect to Looker
      .connect()
      // Finish up setup
      .then(setupDashboard)
      // Log if something went wrong
      .catch((error: Error) => {
        updateStatus('#dashboard-state', 'Connection error')
        console.error('Connection error', error)
      })
  } else {
    document.querySelector<HTMLDivElement>('#dashboard')!.innerHTML = ''
    document.querySelector<HTMLDivElement>('#demo-dashboard')!.style.display =
      'none'
  }
}

/**
 * Render a look using the Embed SDK. When active this sets up listeners
 * for events that can be sent by the Looker embedded UI.
 */
const renderLook = (runtimeConfig: RuntimeConfig) => {
  // Create an embedded Look
  if (runtimeConfig.showLook) {
    document.querySelector<HTMLDivElement>('#demo-look')!.style.display = ''
    getEmbedSDK()
      .createLookWithId(parseInt(runtimeConfig.lookId, 10))
      // Append to the #look element
      .appendTo('#look')
      // Listen to messages to display progress
      .on('look:ready', () => updateStatus('#look-state', 'Loaded'))
      .on('look:run:start', () => updateStatus('#look-state', 'Running'))
      .on('look:run:complete', () => updateStatus('#look-state', 'Done'))
      // Listen to messages that change Look
      .on('look:save:complete', () => updateStatus('#look-state', 'Saved'))
      .on('look:delete:complete', () => updateStatus('#look-state', 'Deleted'))
      .on('session:status', (event: SessionStatus) => {
        processSessionStatus(event, '#look-state')
      })
      // Give the embedded content a class for styling purposes
      .withClassName('looker-embed')
      // Set the initial filters
      .withFilters({ 'users.state': 'California' })
      // Finalize the build
      .build()
      // Connect to Looker
      .connect()
      // Finish up setup
      .then(setupLook)
      // Log if something went wrong
      .catch((error: Error) => {
        updateStatus('#look-state', 'Connection error')
        console.error('Connection error', error)
      })
  } else {
    document.querySelector<HTMLDivElement>('#look')!.innerHTML = ''
    document.querySelector<HTMLDivElement>('#demo-look')!.style.display = 'none'
  }
}

/**
 * Render an explore using the Embed SDK. When active this sets up listeners
 * for events that can be sent by the Looker embedded UI.
 */
const renderExplore = (runtimeConfig: RuntimeConfig) => {
  // Create an embedded Explore
  if (runtimeConfig.showExplore) {
    document.querySelector<HTMLDivElement>('#demo-explore')!.style.display = ''
    getEmbedSDK()
      .createExploreWithId(runtimeConfig.exploreId)
      // Append to the #explore element
      .appendTo('#explore')
      // Listen to messages to display progress
      .on('explore:ready', () => updateStatus('#explore-state', 'Loaded'))
      .on('explore:run:start', () => updateStatus('#explore-state', 'Running'))
      .on('explore:run:complete', () => updateStatus('#explore-state', 'Done'))
      .on('session:status', (event: SessionStatus) => {
        processSessionStatus(event, '#explore-state')
      })
      // Give the embedded content a class for styling purposes
      .withClassName('looker-embed')
      // Set the initial filters
      .withFilters({ 'users.state': 'California' })
      // Finalize the build
      .build()
      // Connect to Looker
      .connect()
      // Finish up setup
      .then(setupExplore)
      // Log if something went wrong
      .catch((error: Error) => {
        updateStatus('#explore-state', 'Connection error')
        console.error('Connection error', error)
      })
  } else {
    document.querySelector<HTMLDivElement>('#explore')!.innerHTML = ''
    document.querySelector<HTMLDivElement>('#demo-explore')!.style.display =
      'none'
  }
}

/**
 * Render an extension using the Embed SDK. When active this sets up listeners
 * for events that can be sent by the Looker embedded UI.
 */
const renderExtension = (runtimeConfig: RuntimeConfig) => {
  // Create an embedded extension (Requires Looker 7.12 and extension framework)
  if (runtimeConfig.showExtension) {
    document.querySelector<HTMLDivElement>('#demo-extension')!.style.display =
      ''
    getEmbedSDK()
      .createExtensionWithId(runtimeConfig.extensionId)
      // Append to the #extension element
      .appendTo('#extension')
      .on('session:status', (event: SessionStatus) => {
        processSessionStatus(event, '#extension-state')
      })
      // Give the embedded content a class for styling purposes
      .withClassName('looker-embed')
      // Finalize the build
      .build()
      // Connect to Looker
      .connect()
      // Log if something went wrong
      .catch((error: Error) => {
        updateStatus('#extension-state', 'Connection error')
        console.error('Connection error', error)
      })
  } else {
    document.querySelector<HTMLDivElement>('#extension')!.innerHTML = ''
    document.querySelector<HTMLDivElement>('#demo-extension')!.style.display =
      'none'
  }
}

/**
 * Initialize the SDK. lookerHost is the address of the Looker instance. It is configured in
 * democonfig.ts. lookerHost needs to be set for messages to be exchanged from the host
 * document to the embedded content. The auth endpoint is documented in README.md.
 */
const initializeEmbedSdk = (runtimeConfig: RuntimeConfig) => {
  if (runtimeConfig.embedType === 'cookieless') {
    // Use cookieless embed
    getEmbedSDK().initCookieless(
      runtimeConfig.lookerHost,
      `${runtimeConfig.proxyPath}/acquire-embed-session`,
      `${runtimeConfig.proxyPath}/generate-embed-tokens`
    )
  } else {
    // Use SSO embed
    getEmbedSDK().init(
      runtimeConfig.lookerHost,
      `${runtimeConfig.proxyPath}/auth`
    )
  }
}

/**
 * Event listener to create embedded content. Waits until DOM is loaded so that
 * all the parent elements are present.
 */
document.addEventListener('DOMContentLoaded', function () {
  loadConfiguration()
  initializeControls()
  const runtimeConfig = getConfiguration()
  initializeEmbedSdk(runtimeConfig)
  renderDashboard(runtimeConfig)
  renderLook(runtimeConfig)
  renderExplore(runtimeConfig)
  renderExtension(runtimeConfig)
})