/**
 * File: imageFeed.js
 * Project: comfy_mtb
 * Author: Mel Massadian
 *
 * Copyright (c) 2023 Mel Massadian
 *
 */

// forked from pysssss's imageFeed.js

import { api } from '/scripts/api.js'
import { app } from '/scripts/app.js'

const styles = {
  lighbox: {
    position: 'fixed',
    top: 0,
    left: 0,
    width: '100vw',
    height: '100vh',
    background: 'rgba(0,0,0,0.5)',
    display: 'none',
    justifyContent: 'center',
    alignItems: 'center',
    zIndex: 999,
  },
  lightboxBtn: (extra) => ({
    position: 'absolute',
    top: '50%',
    background: 'none',
    border: 'none',
    color: '#fff',
    zIndex: 1000,
    fontSize: '30px',
    cursor: 'pointer',
    pointerEvents: 'auto',
    ...extra,
  }),
  img_list: {
    minHeight: '30px',
    maxHeight: '300px',
    width: '100vw',
    position: 'absolute',
    bottom: 0,
    zIndex: 10,
    background: '#333',
    overflow: 'auto',
  },
}

let currentImageIndex = 0
const imageUrls = []

let image_menu = null
let activated = true

app.registerExtension({
  name: 'mtb.ImageFeed',
  init: async () => {
    const pythongossFeed = app.extensions.find(
      (e) => e.name == 'pysssss.ImageFeed'
    )
    if (pythongossFeed) {
      console.warn(
        "[mtb] - Aborting the loading of mtb's imageFeed in favor of pysssss.ImageFeed"
      )
      activated = false // just in case other methods are added later on
      return
    }
    // - HTML & CSS
    //- lightbox
    const lightboxContainer = document.createElement('div')
    Object.assign(lightboxContainer.style, styles.lighbox)

    const lightboxImage = document.createElement('img')
    Object.assign(lightboxImage.style, {
      maxHeight: '100%',
      maxWidth: '100%',
      borderRadius: '5px',
    })

    // previous and next buttons
    const lightboxPrevBtn = document.createElement('button')
    const lightboxNextBtn = document.createElement('button')

    lightboxPrevBtn.textContent = '❮'
    lightboxNextBtn.textContent = '❯'

    Object.assign(lightboxPrevBtn.style, styles.lightboxBtn({ left: '0%' }))
    Object.assign(lightboxNextBtn.style, styles.lightboxBtn({ right: '0%' }))

    // close button
    const lightboxCloseBtn = document.createElement('button')
    Object.assign(
      lightboxCloseBtn.style,
      styles.lightboxBtn({ right: '0', top: '0' })
    )
    lightboxCloseBtn.textContent = '❌'

    const lightboxButtons = document.createElement('div')
    Object.assign(lightboxButtons.style, {
      position: 'absolute',
      top: '0%',
      right: '0%',
      // transform: "translate(50%, -50%)",
      height: '100%',
      width: '100%',
      background: 'none',
      border: 'none',
      color: '#fff',
      fontSize: '30px',
      cursor: 'pointer',
      pointerEvents: 'none',
    })

    lightboxButtons.append(lightboxPrevBtn, lightboxNextBtn, lightboxCloseBtn)
    lightboxContainer.append(lightboxButtons, lightboxImage)

    //- image list
    const imageListContainer = document.createElement('div')
    Object.assign(imageListContainer.style, styles.img_list)

    const createImgListBtn = (text, style) => {
      const btn = document.createElement('button')
      btn.type = 'button'
      btn.textContent = text
      Object.assign(btn.style, {
        ...style,
        border: 'none',
        color: '#fff',
        background: 'none',
        height: '20px',
        cursor: 'pointer',
        position: 'absolute',
        top: '5px',
        fontSize: '12px',
        lineHeight: '12px',
      })
      imageListContainer.append(btn)
      return btn
    }
    const showBtn = document.createElement('button')
    const closeBtn = createImgListBtn('❌', {
      width: '20px',
      textIndent: '-4px',
      right: '5px',
    })
    const loadButton = createImgListBtn('Load Session History', {
      right: '90px',
    })
    const clearButton = createImgListBtn('Clear', {
      right: '30px',
    })

    //- tools popup button
    showBtn.classList.add('comfy-settings-btn')
    Object.assign(showBtn.style, {
      right: '16px',
      cursor: 'pointer',
      display: 'none',
    })

    //- append to DOM
    document.body.append(imageListContainer)

    showBtn.textContent = '🖼️'
    showBtn.onclick = () => {
      imageListContainer.style.display = 'block'
      showBtn.style.display = 'none'
    }
    document.querySelector('.comfy-settings-btn').after(showBtn)
    document.querySelector('.comfy-settings-btn').after(lightboxContainer)

    // for (const { output } of history) {
    // 	if (output?.images) {
    // 		for (const src of output.images) {
    // 			const img = document.createElement("img");
    // 			const but = document.createElement("button");

    //- callbacks
    closeBtn.onclick = () => {
      imageListContainer.style.display = 'none'
      showBtn.style.display = 'unset'
    }

    clearButton.onclick = () => {
      imageListContainer.replaceChildren(closeBtn, clearButton, loadButton)
    }

    lightboxNextBtn.onclick = () => {
      currentImageIndex = (currentImageIndex + 1) % imageUrls.length
      const imageUrl = imageUrls[currentImageIndex]
      lightboxImage.src = imageUrl
    }

    // Modify the lightboxPrevBtn onclick callback
    lightboxPrevBtn.onclick = () => {
      currentImageIndex =
        (currentImageIndex - 1 + imageUrls.length) % imageUrls.length
      const imageUrl = imageUrls[currentImageIndex]
      lightboxImage.src = imageUrl
    }

    lightboxCloseBtn.onclick = () => {
      lightboxContainer.style.display = 'none'
    }
    lightboxImage.onclick = lightboxNextBtn.onclick
    /**
     * This is the function that creates the image buttons for the image list
     * They are wrapped in a button so that they can be clicked and open
     * the image in the lightbox.
     * @param {*} src
     */
    const createImageBtn = (src) => {
      console.debug(`making image ${src.filename}`)
      const img = document.createElement('img')
      const but = document.createElement('button')

      Object.assign(but.style, {
        height: '120px',
        width: '120px',
        border: 'none',
        padding: 0,
        margin: 0,
      })
      Object.assign(img.style, {
        width: '100%',
        height: '100%',
        objectFit: 'cover',
      })

      img.src = `/view?filename=${encodeURIComponent(src.filename)}&type=${
        src.type
      }&subfolder=${encodeURIComponent(src.subfolder)}`

      imageUrls.push(img.src)

      console.debug(img.src)

      img.onload = () => {
        but.style.width = `${120 * (img.naturalWidth / img.naturalHeight)}px`
      }

      but.onclick = () => {
        lightboxContainer.style.display = 'flex'
        // add the same image to the lightbox
        lightboxImage.src = img.src
        // lighboxContainer.replaceChildren(lightboxButtons, img);
      }

      // add right click menu
      but.addEventListener('contextmenu', (e) => {
        e.preventDefault()

        if (image_menu) {
          image_menu.remove()
        }

        image_menu = document.createElement('div')
        Object.assign(image_menu.style, {
          position: 'absolute',
          top: `${e.clientY}px`,
          left: `${e.clientX}px`,
          background: '#333',
          color: '#fff',
          padding: '5px',
          borderRadius: '5px',
          zIndex: 999,
        })
        const load_img = document.createElement('button')
        load_img.textContent = 'Load'
        load_img.onclick = () => {
          app.handleFile(img.src)
        }

        image_menu.appendChild(load_img)
        document.body.appendChild(image_menu)
      })

      but.append(img)
      imageListContainer.prepend(but)
    }

    loadButton.onclick = async () => {
      const all_history = await api.getHistory()
      for (const history of all_history.History) {
        if (history.outputs) {
          for (const key of Object.keys(history.outputs)) {
            console.debug(key)
            if (history.outputs[key].images) {
              for (const im of history.outputs[key].images) {
                console.debug(im)
                createImageBtn(im)
              }
            }
          }
          // for (const src of outputs.outputs.images) {
          // 	console.debug(src)
          // 	makeImage(`${src.subfolder}/${src.filename}`)
          // }
        }
      }
    }

    ///////-------

    // const all_history = await api.getHistory()
    // for (const history of all_history.History) {
    // 	if (history.outputs) {
    // 		for (const key of Object.keys(history.outputs)) {
    // 			for (const im of history.outputs[key].images) {
    // 				makeImage(im)
    // 			}
    // 		}
    // 		// for (const src of outputs.outputs.images) {
    // 		// 	console.debug(src)
    // 		// 	makeImage(`${src.subfolder}/${src.filename}`)
    // 		// }
    // 	}
    // }

    //- Hook into the API
    api.addEventListener('executed', ({ detail }) => {
      if (detail?.output?.images) {
        for (const src of detail.output.images) {
          console.debug(`Adding ${src} to image feed`)
          createImageBtn(src)
        }
      }
    })
  },
})