pyssh-client/app/dialogs/snippet_dialog.py

"""Gestionnaire de snippets : creer, modifier, supprimer, rechercher, organiser
par categorie."""
from __future__ import annotations

from PySide6.QtCore import Qt
from PySide6.QtWidgets import (
    QDialog, QVBoxLayout, QHBoxLayout, QTreeWidget, QTreeWidgetItem, QPushButton,
    QMessageBox, QLineEdit, QLabel, QFormLayout, QTextEdit, QDialogButtonBox, QComboBox,
)

from app.snippets import Snippet, SnippetStore

SNIPPET_ROLE = Qt.UserRole


class SnippetEditDialog(QDialog):
    def __init__(self, snippet: Snippet | None = None, categories: list[str] | None = None, parent=None):
        super().__init__(parent)
        self.snippet = snippet or Snippet()
        self.setWindowTitle("Nouveau snippet" if snippet is None else "Modifier le snippet")
        self.setMinimumWidth(420)

        layout = QVBoxLayout(self)
        form = QFormLayout()

        self.name_edit = QLineEdit(self.snippet.name)
        self.category_combo = QComboBox()
        self.category_combo.setEditable(True)
        for cat in categories or []:
            self.category_combo.addItem(cat)
        self.category_combo.setCurrentText(self.snippet.category)
        self.description_edit = QLineEdit(self.snippet.description)
        self.command_edit = QTextEdit(self.snippet.command)
        self.command_edit.setFixedHeight(80)
        self.command_edit.setPlaceholderText("ex : docker ps -a")

        form.addRow("Nom :", self.name_edit)
        form.addRow("Categorie :", self.category_combo)
        form.addRow("Description :", self.description_edit)
        form.addRow("Commande :", self.command_edit)
        layout.addLayout(form)

        buttons = QDialogButtonBox(QDialogButtonBox.Ok | QDialogButtonBox.Cancel)
        buttons.accepted.connect(self._on_accept)
        buttons.rejected.connect(self.reject)
        layout.addWidget(buttons)

    def _on_accept(self) -> None:
        if not self.name_edit.text().strip():
            QMessageBox.warning(self, "Nom manquant", "Indiquez un nom pour ce snippet.")
            self.name_edit.setFocus()
            return
        if not self.command_edit.toPlainText().strip():
            QMessageBox.warning(self, "Commande manquante", "Indiquez la commande du snippet.")
            self.command_edit.setFocus()
            return
        self.snippet.name = self.name_edit.text().strip()
        self.snippet.category = self.category_combo.currentText().strip()
        self.snippet.description = self.description_edit.text().strip()
        self.snippet.command = self.command_edit.toPlainText().rstrip("\n")
        self.accept()

    def result_snippet(self) -> Snippet:
        return self.snippet


class SnippetManagerDialog(QDialog):
    def __init__(self, store: SnippetStore, parent=None):
        super().__init__(parent)
        self.store = store
        self.setWindowTitle("Gestionnaire de snippets")
        self.setMinimumSize(560, 420)

        layout = QVBoxLayout(self)

        self.search_edit = QLineEdit()
        self.search_edit.setPlaceholderText("Rechercher (nom, categorie, description, commande)...")
        self.search_edit.textChanged.connect(self.refresh)
        layout.addWidget(self.search_edit)

        self.tree = QTreeWidget()
        self.tree.setHeaderLabels(["Nom", "Description"])
        self.tree.setColumnWidth(0, 220)
        self.tree.itemDoubleClicked.connect(lambda _i, _c: self.edit_selected())
        self.tree.itemSelectionChanged.connect(self._update_preview)
        layout.addWidget(self.tree)

        self.command_preview = QLabel("")
        self.command_preview.setWordWrap(True)
        self.command_preview.setObjectName("statusLabel")
        layout.addWidget(self.command_preview)

        btn_row = QHBoxLayout()
        self.new_btn = QPushButton("Nouveau...")
        self.edit_btn = QPushButton("Modifier...")
        self.delete_btn = QPushButton("Supprimer")
        for b in (self.new_btn, self.edit_btn, self.delete_btn):
            btn_row.addWidget(b)
        layout.addLayout(btn_row)

        close_row = QHBoxLayout()
        close_row.addStretch()
        close_btn = QPushButton("Fermer")
        close_btn.clicked.connect(self.accept)
        close_row.addWidget(close_btn)
        layout.addLayout(close_row)

        self.new_btn.clicked.connect(self.create_new)
        self.edit_btn.clicked.connect(self.edit_selected)
        self.delete_btn.clicked.connect(self.delete_selected)

        self.refresh()

    def refresh(self) -> None:
        self.tree.clear()
        query = self.search_edit.text()
        matches = {s.id for s in self.store.search(query)} if query.strip() else None
        for category, snippets in self.store.by_category().items():
            visible = [s for s in snippets if matches is None or s.id in matches]
            if not visible:
                continue
            cat_item = QTreeWidgetItem([category])
            cat_item.setFlags(cat_item.flags() & ~Qt.ItemIsSelectable)
            font = cat_item.font(0)
            font.setBold(True)
            cat_item.setFont(0, font)
            self.tree.addTopLevelItem(cat_item)
            for snippet in visible:
                item = QTreeWidgetItem([snippet.name, snippet.description])
                item.setData(0, SNIPPET_ROLE, snippet.id)
                cat_item.addChild(item)
        self.tree.expandAll()
        self._update_preview()

    def _current_snippet(self) -> Snippet | None:
        item = self.tree.currentItem()
        if not item:
            return None
        snippet_id = item.data(0, SNIPPET_ROLE)
        return self.store.get(snippet_id) if snippet_id else None

    def _update_preview(self) -> None:
        snippet = self._current_snippet()
        self.command_preview.setText(snippet.command if snippet else "")
        has_selection = snippet is not None
        self.edit_btn.setEnabled(has_selection)
        self.delete_btn.setEnabled(has_selection)

    def create_new(self) -> None:
        dialog = SnippetEditDialog(categories=self.store.categories(), parent=self)
        if dialog.exec():
            self.store.add(dialog.result_snippet())
            self.refresh()

    def edit_selected(self) -> None:
        snippet = self._current_snippet()
        if not snippet:
            return
        dialog = SnippetEditDialog(snippet=snippet, categories=self.store.categories(), parent=self)
        if dialog.exec():
            self.store.update(dialog.result_snippet())
            self.refresh()

    def delete_selected(self) -> None:
        snippet = self._current_snippet()
        if not snippet:
            return
        if QMessageBox.question(self, "Supprimer", f"Supprimer le snippet « {snippet.name} » ?") == QMessageBox.Yes:
            self.store.delete(snippet.id)
            self.refresh()