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path: root/ui/taxonomy_view.py
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from __future__ import annotations
from pathlib import Path
from PyQt6.QtWidgets import (
    QWidget, QVBoxLayout, QHBoxLayout, QTabWidget,
    QTableWidget, QTableWidgetItem, QPushButton,
    QLabel, QDialog, QFormLayout, QLineEdit, QMessageBox,
)
from PyQt6.QtCore import Qt
from PyQt6.QtGui import QColor
from core.taxonomy import TaxonomyModel, load_taxonomy, save_taxonomy

class AddTermDialog(QDialog):
    def __init__(self, parent=None):
        super().__init__(parent)
        self.setWindowTitle("Aggiungi termine")
        layout = QVBoxLayout(self)
        form = QFormLayout()
        self._it = QLineEdit()
        self._en = QLineEdit()
        form.addRow("IT:", self._it)
        form.addRow("EN:", self._en)
        layout.addLayout(form)
        btns = QHBoxLayout()
        ok = QPushButton("Aggiungi")
        ok.clicked.connect(self.accept)
        cancel = QPushButton("Annulla")
        cancel.clicked.connect(self.reject)
        btns.addStretch()
        btns.addWidget(cancel)
        btns.addWidget(ok)
        layout.addLayout(btns)

    @property
    def it_term(self) -> str:
        return self._it.text().strip()

    @property
    def en_term(self) -> str:
        return self._en.text().strip()

class TaxonomyView(QWidget):
    def __init__(self, blog_root: Path, parent=None):
        super().__init__(parent)
        self._blog_root = blog_root
        self._tags_it = blog_root / "docs" / "tags-it.txt"
        self._tags_en = blog_root / "docs" / "tags-en.txt"
        self._model: TaxonomyModel | None = None
        self._build_ui()
        self.load()

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

        tabs = QTabWidget()

        tags_tab = QWidget()
        tl = QVBoxLayout(tags_tab)
        self._tags_table = QTableWidget(0, 2)
        self._tags_table.setHorizontalHeaderLabels(["🇮🇹 Italiano", "🇬🇧 English"])
        self._tags_table.horizontalHeader().setStretchLastSection(True)
        tl.addWidget(self._tags_table)
        tag_btns = QHBoxLayout()
        add_tag_btn = QPushButton("➕ Aggiungi termine")
        add_tag_btn.clicked.connect(self._add_term)
        save_tags_btn = QPushButton("💾 Salva")
        save_tags_btn.clicked.connect(self._save)
        tag_btns.addWidget(add_tag_btn)
        tag_btns.addStretch()
        tag_btns.addWidget(save_tags_btn)
        tl.addLayout(tag_btns)
        tabs.addTab(tags_tab, "🏷 Tags")

        layout.addWidget(tabs)

        self._status = QLabel("")
        self._status.setStyleSheet("color:#888;font-size:10px;padding:4px;")
        layout.addWidget(self._status)

    def load(self):
        if not self._tags_it.exists():
            self._status.setText("tags-it.txt non trovato.")
            return
        self._model = load_taxonomy(self._tags_it, self._tags_en)
        self._populate_table()

    def _populate_table(self):
        if not self._model:
            return
        self._tags_table.setRowCount(0)
        for it_term, en_term in sorted(self._model.it_to_en.items()):
            row = self._tags_table.rowCount()
            self._tags_table.insertRow(row)
            self._tags_table.setItem(row, 0, QTableWidgetItem(it_term))
            self._tags_table.setItem(row, 1, QTableWidgetItem(en_term))

        for orphan in self._model.orphans_it:
            row = self._tags_table.rowCount()
            self._tags_table.insertRow(row)
            it_item = QTableWidgetItem(orphan)
            it_item.setForeground(QColor("#ff6b6b"))
            en_item = QTableWidgetItem("⚠ mancante")
            en_item.setForeground(QColor("#ff6b6b"))
            self._tags_table.setItem(row, 0, it_item)
            self._tags_table.setItem(row, 1, en_item)

        self._status.setText(
            f"{len(self._model.it_to_en)} coppie · {len(self._model.orphans_it)} IT orfani · {len(self._model.orphans_en)} EN orfani"
        )

    def _add_term(self):
        dlg = AddTermDialog(self)
        if dlg.exec() and dlg.it_term and dlg.en_term:
            if self._model:
                self._model.it_to_en[dlg.it_term] = dlg.en_term
                self._populate_table()

    def _save(self):
        if not self._model:
            return
        updated: dict[str, str] = {}
        for row in range(self._tags_table.rowCount()):
            it_item = self._tags_table.item(row, 0)
            en_item = self._tags_table.item(row, 1)
            if it_item and en_item:
                it_val = it_item.text().strip()
                en_val = en_item.text().strip()
                if it_val and en_val and en_val != "⚠ mancante":
                    updated[it_val] = en_val
        self._model.it_to_en = updated
        save_taxonomy(self._model, self._tags_it, self._tags_en)
        self._status.setText("Salvato.")