"""Provider editor dialog."""

from PySide6.QtWidgets import (
    QDialog, QVBoxLayout, QFormLayout, QLineEdit,
    QPushButton, QHBoxLayout, QLabel
)

from ...providers import Provider, add_provider


class ProviderDialog(QDialog):
    """Dialog for adding/editing providers."""

    def __init__(self, parent, name: str = None, provider: Provider = None):
        super().__init__(parent)
        self.setWindowTitle("Edit Provider" if provider else "Add Provider")
        self.setMinimumWidth(450)
        self._editing = provider is not None
        self._original_name = name
        self._setup_ui()

        if provider:
            self._load_provider(name, provider)

    def _setup_ui(self):
        """Set up the UI."""
        layout = QVBoxLayout(self)
        layout.setSpacing(16)

        # Form
        form = QFormLayout()
        form.setSpacing(12)

        self.name_input = QLineEdit()
        self.name_input.setPlaceholderText("claude")
        form.addRow("Name:", self.name_input)

        self.cmd_input = QLineEdit()
        self.cmd_input.setPlaceholderText("claude-cli")
        form.addRow("Command:", self.cmd_input)

        self.desc_input = QLineEdit()
        self.desc_input.setPlaceholderText("Claude AI via claude-cli")
        form.addRow("Description:", self.desc_input)

        layout.addLayout(form)

        # Help text
        help_text = QLabel(
            "The command should accept input on stdin and output to stdout.\n"
            "Example commands: claude-cli, sgpt, llm, mods"
        )
        help_text.setStyleSheet("color: #718096; font-size: 11px;")
        help_text.setWordWrap(True)
        layout.addWidget(help_text)

        layout.addStretch()

        # Buttons
        buttons = QHBoxLayout()
        buttons.addStretch()

        self.btn_cancel = QPushButton("Cancel")
        self.btn_cancel.setObjectName("secondary")
        self.btn_cancel.clicked.connect(self.reject)
        buttons.addWidget(self.btn_cancel)

        self.btn_ok = QPushButton("Save")
        self.btn_ok.clicked.connect(self._save)
        buttons.addWidget(self.btn_ok)

        layout.addLayout(buttons)

    def _load_provider(self, name: str, provider: Provider):
        """Load provider data into form."""
        self.name_input.setText(name)
        self.name_input.setEnabled(False)  # Can't rename
        self.cmd_input.setText(provider.command)
        self.desc_input.setText(provider.description or "")

    def _save(self):
        """Save the provider."""
        name = self.name_input.text().strip()
        command = self.cmd_input.text().strip()

        if not name:
            self.name_input.setFocus()
            return

        if not command:
            self.cmd_input.setFocus()
            return

        description = self.desc_input.text().strip() or None

        try:
            add_provider(name, command, description)
            self.accept()
        except Exception as e:
            from PySide6.QtWidgets import QMessageBox
            QMessageBox.critical(self, "Error", f"Failed to save provider:\n{e}")