from __future__ import annotations
from pathlib import Path
from PyQt6.QtWidgets import (
    QWidget, QVBoxLayout, QHBoxLayout,
    QLabel, QPushButton, QPlainTextEdit,
)
from PyQt6.QtCore import QUrl
from PyQt6.QtGui import QDesktopServices
from workers.hugo_worker import HugoWorker
from workers.npm_worker import NpmWorker

class HugoPanel(QWidget):
    def __init__(self, repo_path: Path, parent=None):
        super().__init__(parent)
        self._worker = HugoWorker(repo_path, parent=self)
        self._worker.log_line.connect(self._on_log)
        self._worker.started.connect(self._on_hugo_started)
        self._worker.stopped.connect(self._on_hugo_stopped)
        self._worker.error.connect(lambda e: self._log.appendPlainText(f"[ERRORE] {e}"))

        self._npm = NpmWorker(repo_path, parent=self)
        self._npm.log_line.connect(self._on_log)
        self._npm.finished.connect(self._on_build_finished)

        self._build_ui()

    def _build_ui(self):
        layout = QVBoxLayout(self)

        top = QHBoxLayout()
        self._status_label = QLabel("🔴 Hugo server: fermo")
        self._status_label.setStyleSheet("color:#ff6b6b;font-weight:bold;")
        top.addWidget(self._status_label)
        top.addStretch()

        self._start_btn = QPushButton("▶ Avvia")
        self._start_btn.clicked.connect(self._on_start_clicked)
        self._stop_btn = QPushButton("⏹ Ferma")
        self._stop_btn.clicked.connect(self._worker.stop)
        self._stop_btn.setEnabled(False)
        self._build_btn = QPushButton("🔨 Build CSS")
        self._build_btn.clicked.connect(self._on_build_clicked)
        top.addWidget(self._start_btn)
        top.addWidget(self._stop_btn)
        top.addWidget(self._build_btn)

        self._url_btn = QPushButton("🌐 http://localhost:1313")
        self._url_btn.setFlat(True)
        self._url_btn.setStyleSheet("color:#60a5fa;text-decoration:underline;")
        self._url_btn.clicked.connect(lambda: QDesktopServices.openUrl(QUrl("http://localhost:1313")))
        self._url_btn.setVisible(False)
        top.addWidget(self._url_btn)

        layout.addLayout(top)

        self._log = QPlainTextEdit()
        self._log.setReadOnly(True)
        self._log.setStyleSheet("background:#0a0a12;color:#00ff88;font-family:monospace;font-size:11px;")
        layout.addWidget(self._log)

    # --- button handlers ---

    def _on_start_clicked(self):
        self._status_label.setText("🟡 Build CSS...")
        self._status_label.setStyleSheet("color:#fbbf24;font-weight:bold;")
        self._start_btn.setEnabled(False)
        self._stop_btn.setEnabled(False)
        self._build_btn.setEnabled(False)
        self._log.appendPlainText("─── npm run build ───")
        self._npm.run()

    def _on_build_clicked(self):
        self._build_btn.setEnabled(False)
        self._log.appendPlainText("─── npm run build ───")
        self._npm.run()

    # --- npm worker callbacks ---

    def _on_build_finished(self, success: bool):
        if success:
            self._log.appendPlainText("─── build OK ───")
            if not self._worker.is_running:
                # launched via Avvia → now start hugo
                self._log.appendPlainText("─── hugo server avvia ───")
                self._worker.start()
            else:
                # manual rebuild while server running
                self._build_btn.setEnabled(True)
        else:
            self._log.appendPlainText("─── build FALLITO ───")
            if not self._worker.is_running:
                # failed before hugo started → restore idle state
                self._status_label.setText("🔴 Hugo server: fermo")
                self._status_label.setStyleSheet("color:#ff6b6b;font-weight:bold;")
                self._start_btn.setEnabled(True)
                self._build_btn.setEnabled(True)
            else:
                self._build_btn.setEnabled(True)

    # --- hugo worker callbacks ---

    def _on_hugo_started(self):
        self._status_label.setText("🟢 Hugo server: in esecuzione")
        self._status_label.setStyleSheet("color:#00ff88;font-weight:bold;")
        self._start_btn.setEnabled(False)
        self._stop_btn.setEnabled(True)
        self._build_btn.setEnabled(True)
        self._url_btn.setVisible(True)

    def _on_hugo_stopped(self):
        self._status_label.setText("🔴 Hugo server: fermo")
        self._status_label.setStyleSheet("color:#ff6b6b;font-weight:bold;")
        self._start_btn.setEnabled(True)
        self._stop_btn.setEnabled(False)
        self._build_btn.setEnabled(True)
        self._url_btn.setVisible(False)

    # --- log ---

    def _on_log(self, line: str):
        self._log.appendPlainText(line)

    # --- lifecycle ---

    def stop_server(self):
        self._worker.stop()

    def closeEvent(self, event):
        self.stop_server()
        super().closeEvent(event)