/**
 * Preload + Pear polyfill for the PearData GUI under Electron.
 * Runs with contextIsolation: false / nodeIntegration: true so app.js can
 * import HyperDHT packages (pear-electron UI equivalent).
 */
'use strict'

const { ipcRenderer } = require('electron')
const path = require('path')
const fs = require('fs')
const os = require('os')

const cfg = ipcRenderer.sendSync('peardata:get-pear-config') || {}
const storage =
  cfg.storage ||
  process.env.PEARDATA_STORAGE ||
  path.join(os.homedir(), '.config', 'peardata', 'storage')

try {
  fs.mkdirSync(storage, { recursive: true })
} catch {
  // ignore
}

const teardownHooks = []

/** Pear surface used by PearData UI */
const Pear = {
  config: {
    storage,
    name: cfg.name || 'PearData',
    version: cfg.version || '0.0.0',
  },
  app: {
    storage,
    name: cfg.name || 'PearData',
  },
  exit(code = 0) {
    try {
      ipcRenderer.invoke('peardata:exit', code)
    } catch {
      // ignore
    }
  },
  teardown(fn) {
    if (typeof fn === 'function') teardownHooks.push(fn)
  },
  constructor: {
    IPC: null,
    UI: null,
    CUTOVER: false,
  },
}

globalThis.Pear = Pear
try {
  window.Pear = Pear
} catch {
  // ignore
}

// pear-ctrl: platform chrome for frameless / hiddenInset titlebar
try {
  if (typeof customElements !== 'undefined' && !customElements.get('pear-ctrl')) {
    const platform =
      (cfg && cfg.platform) ||
      (typeof process !== 'undefined' && process.platform) ||
      'darwin'

    class PearCtrl extends HTMLElement {
      connectedCallback() {
        this.setAttribute('data-platform', platform)
        this.setAttribute('role', 'group')
        this.setAttribute('aria-label', 'Window controls')

        if (platform === 'darwin') {
          this.replaceChildren()
          return
        }

        this.replaceChildren()
        this.classList.add('pd-electron-ctrl')
        const mkBtn = (action, label, pathD) => {
          const btn = document.createElement('button')
          btn.type = 'button'
          btn.className = `pd-win-btn pd-win-btn--${action}`
          btn.title = label
          btn.setAttribute('aria-label', label)
          btn.innerHTML = `<svg width="10" height="10" viewBox="0 0 10 10" aria-hidden="true"><path fill="currentColor" d="${pathD}"/></svg>`
          btn.addEventListener('click', (e) => {
            e.preventDefault()
            e.stopPropagation()
            try {
              ipcRenderer.invoke(`peardata:window-${action}`)
            } catch {
              // ignore
            }
          })
          return btn
        }
        this.append(
          mkBtn('minimize', 'Minimize', 'M0 5h10v1H0z'),
          mkBtn('maximize', 'Maximize', 'M1 1h8v8H1V1zm1 1v6h6V2H2z'),
          mkBtn(
            'close',
            'Close',
            'M1.2 0.5L5 4.3 8.8.5l.7.7L5.7 5l3.8 3.8-.7.7L5 5.7 1.2 9.5l-.7-.7L4.3 5 .5 1.2l.7-.7z'
          )
        )
      }
    }
    customElements.define('pear-ctrl', PearCtrl)
  }
} catch {
  // ignore
}

window.addEventListener('beforeunload', () => {
  for (const fn of teardownHooks) {
    try {
      const r = fn()
      if (r && typeof r.then === 'function') r.catch(() => {})
    } catch {
      // ignore
    }
  }
})

console.log('[peardata] Pear polyfill ready, storage=', storage)