import { EditorBuild } from "/loader/editor-build.js"

export class Layout extends HTMLElement {
  cspProfiles = {
    local: "default-src 'self' 'unsafe-inline' 'unsafe-eval'",
    unpkg: "default-src unpkg.com 'self' 'unsafe-inline' 'unsafe-eval'",
    open: undefined,
  }

  constructor() {
    super()
    this.attachShadow({mode: 'open'})
    this.csp = "default-src 'self' 'unsafe-inline' 'unsafe-eval'"
    this.header = document.createElement('m-header')
    this.dialogWrap = document.createElement('div')
    this.header.dialogWrap = this.dialogWrap
    this.pageActions = document.createElement(
      'm-page-actions'
    )
    this.pageActions.cspProfiles = this.cspProfiles
    this.header.pageActions = this.pageActions
    this.shadowRoot.append(
      this.header,
      this.dialogWrap,
      this.pageActions,
    )
  }

  connectedCallback() {
    const style = document.createElement('style')
    style.textContent = `
      :host {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        height: 100svh;
        min-height: 100svh;
        max-height: 100svh;
        overflow-y: hidden;
        position: relative;
      }
      m-page, m-file-group-page {
        flex-grow: 1;
      }
      m-dialog::part(footer) {
        padding-top: 15px;
      }
    `
    this.shadowRoot.appendChild(style)
    this.header.editing = this.editing
    this.header.addEventListener('click-edit', () => {
      this.editing = !this.editing
    })
    this.header.addEventListener('create-page', () => {
      this.editing = true
    })
    this.load()
    addEventListener('hashchange', () => {
      this.load()
    })
    this.addEventListener('hash-change', () => {
      this.load()
    })
    this.addEventListener('settings-change', () => {
      this.load()
    })
  }

  load() {
    const path = this.path
    this.editing = false
    const prevPage = this.page
    let isGroup = false
    const body = this.storage.getItem(path) || ''
    if (body.match(/^\s*{/)) {
      try {
        const bodyData = JSON.parse(body)
        isGroup = (
          Array.isArray(bodyData?.files) &&
          bodyData.type === 'm-file-group'
        )
      } catch (err) {
        // do nothing, is not file group
      }
    }
    this.page = document.createElement(
      isGroup ? 'm-file-group-page' : 'm-page'
    )
    this.page.storage = this.storage
    if (isGroup) {
      this.page.cspOff = this.csp === undefined
      this.page.cspProfiles = this.cspProfiles
    } else {
      this.page.csp = this.csp
    }
    if (isGroup) {
      this.page.editorBuild = this.editorBuild
    }
    this.page.path = path
    this.editing = this.editing
    if (prevPage !== undefined) {
      prevPage.remove()
    }
    this.shadowRoot.appendChild(this.page)
    this.header.path = path
    this.pageActions.path = path
    this.pageActions.page = this.page
  }

  get path() {
    const hash = (
      location.hash.slice(1) || '/'
    )
    return hash.startsWith('/') ? new URL(
      hash,
      location.href
    ).pathname : hash
  }

  set editing(value) {
    this.storage.session.setItem(
      'editing', value ? 'true' : 'false'
    )
    this.header.editing = this.editing
    if (this.page) {
      this.page.editing = this.editing
    }
  }

  get editing() {
    try {
      return (
        this.storage.session.getItem('editing') === 'true'
      )
    } catch (e) {
      return false
    }
  }

  get editorBuild() {
    if (this._editorBuild === undefined) {
      this._editorBuild = new EditorBuild()
    }
    return this._editorBuild
  }

  set storage(value) {
    this._storage = value
    this.header.storage = value
    this.pageActions.storage = value
  }

  get storage() {
    return this._storage
  }
}