from rich.markup import escape
from textual import on
from textual.app import ComposeResult
from textual.binding import Binding
from textual.containers import Horizontal, VerticalScroll
from textual.widgets import DataTable, Static

import portfolio
from fields import get_path, to_form_text
from tui.content_pane import ContentPane
from tui.record_editor import RecordEditor

PREVIEW_LENGTH = 60


class ProfilePane(ContentPane):
    BINDINGS = [
        Binding("e", "edit", "Edit"),
        Binding("r", "reload", "Reload"),
    ]

    content_file = portfolio.PROFILE.file

    def compose(self) -> ComposeResult:
        with Horizontal(classes="split-layout"):
            yield DataTable(cursor_type="row", zebra_stripes=True)
            with VerticalScroll(classes="detail-scroll"):
                yield Static("", id="profile-detail")

    def on_mount(self):
        table = self.table()
        table.add_column("Field", key="field")
        table.add_column("Value", key="value")
        self.reload()

    def reload(self, focus_key: str | None = None):
        profile = portfolio.load_records(portfolio.PROFILE)
        table = self.table()
        table.clear()
        for spec in portfolio.PROFILE.fields:
            text = to_form_text(spec.kind, get_path(profile, spec.path)).replace("\n", " · ")
            preview = text if len(text) <= PREVIEW_LENGTH else text[:PREVIEW_LENGTH] + "..."
            table.add_row(spec.label, preview, key=spec.path)
        self.restore_cursor(focus_key)
        self.show_field(self.selected_key())

    def show_field(self, path: str | None):
        spec = next((item for item in portfolio.PROFILE.fields if item.path == path), None)
        detail = self.query_one("#profile-detail", Static)
        if not spec:
            detail.update("")
            return
        value = to_form_text(spec.kind, get_path(portfolio.load_records(portfolio.PROFILE), spec.path))
        hint = f"\n[dim]{spec.hint}[/dim]" if spec.hint else ""
        detail.update(f"[b]{escape(spec.label)}[/b]{hint}\n\n{escape(value) or '[dim]empty[/dim]'}\n\n[dim]Press e or Enter to edit the profile.[/dim]")

    @on(DataTable.RowHighlighted)
    def highlight_changed(self, event: DataTable.RowHighlighted):
        self.show_field(event.row_key.value if event.row_key else None)

    @on(DataTable.RowSelected)
    def row_selected(self):
        self.action_edit()

    def action_edit(self):
        profile = portfolio.load_records(portfolio.PROFILE)
        focus_key = self.selected_key()

        def saved(result: dict | None):
            if result is not None:
                self.run_now(lambda: portfolio.save_record(portfolio.PROFILE, None, result), "Saved profile", focus_key)

        self.app.push_screen(RecordEditor("Edit profile", portfolio.PROFILE.fields, profile), saved)