const {Gio, Gdk, Gtk} = imports.gi
import {Service, Utils} from "../imports.js"
const {exec, execAsync} = Utils

const clamp = (num, min, max) => Math.min(Math.max(num, min), max)
function fileExists(filePath) {
  let file = Gio.File.new_for_path(filePath)
  return file.query_exists(null)
}

class TodoService extends Service {
  static {
    Service.register(this, {updated: []})
  }

  _todoPath = ""
  _todoJson = []

  refresh(value) {
    this.emit("updated", value)
  }

  connectWidget(widget, callback) {
    this.connect(widget, callback, "updated")
  }

  get todo_json() {
    return this._todoJson
  }

  add(content) {
    this._todoJson.push({content, done: false})
    Utils.writeFile(JSON.stringify(this._todoJson), this._todoPath).catch(print)
    this.emit("updated")
  }

  check(index) {
    this._todoJson[index].done = true
    Utils.writeFile(JSON.stringify(this._todoJson), this._todoPath).catch(print)
    this.emit("updated")
  }

  uncheck(index) {
    this._todoJson[index].done = false
    Utils.writeFile(JSON.stringify(this._todoJson), this._todoPath).catch(print)
    this.emit("updated")
  }

  remove(index) {
    this._todoJson.splice(index, 1)
    Utils.writeFile(JSON.stringify(this._todoJson), this._todoPath).catch(print)
    this.emit("updated")
  }

  constructor() {
    super()
    this._todoPath = `${App.configDir}/../../.cache/ags/user/todo.json`
    if (!fileExists(this._todoPath)) {
      // No? create file with empty array
      Utils.exec(`bash -c 'mkdir -p ~/.cache/ags/user'`)
      Utils.exec(`touch ${this._todoPath}`)
      Utils.writeFile("[]", this._todoPath)
        .then(() => {
          this._todoJson = JSON.parse(Utils.readFile(this._todoPath))
        })
        .catch(print)
    } else {
      const fileContents = Utils.readFile(this._todoPath)
      this._todoJson = JSON.parse(fileContents)
    }
  }
}

// the singleton instance
const service = new TodoService()

// make it global for easy use with cli
globalThis.todo = service

// export to use in other modules
export default service