import click
from browser_cli.commands import _handle
from rich.console import Console
from rich.table import Table
import json

console = Console()


@click.group("dom")
def dom_group():
    """Query and interact with page DOM elements."""


@dom_group.command("query")
@click.argument("selector")
def dom_query(selector):
    """Return elements matching CSS SELECTOR (like mini DevTools)."""
    elements = _handle("dom.query", {"selector": selector})
    if not elements:
        console.print("[yellow]No elements found[/yellow]")
        return
    table = Table(show_header=True, header_style="bold cyan")
    table.add_column("Tag", width=12)
    table.add_column("Text", width=40)
    table.add_column("Attributes")
    for el in elements:
        attrs = ", ".join(f"{k}={v!r}" for k, v in (el.get("attrs") or {}).items())
        table.add_row(el.get("tag", ""), (el.get("text") or "")[:60], attrs[:80])
    console.print(table)


@dom_group.command("click")
@click.argument("selector")
def dom_click(selector):
    """Click the first element matching CSS SELECTOR."""
    _handle("dom.click", {"selector": selector})
    console.print(f"[green]Clicked:[/green] {selector}")


@dom_group.command("type")
@click.argument("selector")
@click.argument("text")
def dom_type(selector, text):
    """Type TEXT into the element matching CSS SELECTOR."""
    _handle("dom.type", {"selector": selector, "text": text})
    console.print(f"[green]Typed into:[/green] {selector}")


@dom_group.command("attr")
@click.argument("selector")
@click.argument("attr_name")
def dom_attr(selector, attr_name):
    """Get attribute ATTR_NAME from elements matching CSS SELECTOR."""
    values = _handle("dom.attr", {"selector": selector, "attr": attr_name})
    for v in (values or []):
        console.print(v)


@dom_group.command("text")
@click.argument("selector")
def dom_text(selector):
    """Get text content of elements matching CSS SELECTOR."""
    values = _handle("dom.text", {"selector": selector})
    for v in (values or []):
        console.print(v)


@dom_group.command("exists")
@click.argument("selector")
def dom_exists(selector):
    """Check if an element matching CSS SELECTOR exists on the page."""
    exists = _handle("dom.exists", {"selector": selector})
    if exists:
        console.print(f"[green]exists[/green]: {selector}")
    else:
        console.print(f"[red]not found[/red]: {selector}")
        raise SystemExit(1)


@dom_group.command("scroll")
@click.argument("selector", required=False)
@click.option("--x", type=int, default=None, help="Horizontal scroll position (px)")
@click.option("--y", type=int, default=None, help="Vertical scroll position (px)")
def dom_scroll(selector, x, y):
    """Scroll to a CSS SELECTOR or to an X/Y coordinate."""
    _handle("dom.scroll", {"selector": selector, "x": x, "y": y})
    target = selector or f"({x or 0}, {y or 0})"
    console.print(f"[green]Scrolled to:[/green] {target}")


@dom_group.command("select")
@click.argument("selector")
@click.argument("value")
def dom_select(selector, value):
    """Set the VALUE of a <select> dropdown matching CSS SELECTOR."""
    _handle("dom.select", {"selector": selector, "value": value})
    console.print(f"[green]Selected '{value}' in:[/green] {selector}")


@dom_group.command("eval")
@click.argument("code")
@click.option("--tab", "tab_id", type=int, default=None, help="Tab ID (default: active tab)")
def dom_eval(code, tab_id):
    """Evaluate JavaScript CODE in the page and print the result."""
    result = _handle("dom.eval", {"code": code, "tabId": tab_id})
    if result is None:
        console.print("[dim]null[/dim]")
    else:
        console.print(json.dumps(result, indent=2) if isinstance(result, (dict, list)) else str(result))


@dom_group.command("wait-for")
@click.argument("selector")
@click.option("--timeout", type=float, default=10.0, show_default=True, help="Max seconds to wait")
@click.option("--visible", is_flag=True, help="Wait until element is visible (non-zero size)")
@click.option("--hidden", is_flag=True, help="Wait until element is absent or hidden")
@click.option("--tab", "tab_id", type=int, default=None, help="Tab ID (default: active tab)")
def dom_wait_for(selector, timeout, visible, hidden, tab_id):
    """Wait until CSS SELECTOR appears (or disappears) in the DOM."""
    _handle("dom.wait_for", {
        "selector": selector,
        "timeout": int(timeout * 1000),
        "visible": visible,
        "hidden": hidden,
        "tabId": tab_id,
    })
    state = "hidden" if hidden else ("visible" if visible else "present")
    console.print(f"[green]Ready ({state}):[/green] {selector}")


@dom_group.command("key")
@click.argument("key")
@click.option("--selector", default=None, help="CSS selector to target (default: focused element)")
def dom_key(key, selector):
    """Dispatch a keyboard KEY event (e.g. Enter, Tab, Escape, ArrowDown)."""
    _handle("dom.key", {"key": key, "selector": selector})
    target = selector or "active element"
    console.print(f"[green]Key '{key}' sent to:[/green] {target}")


@dom_group.command("hover")
@click.argument("selector")
def dom_hover(selector):
    """Dispatch mouseover/mouseenter on the element matching CSS SELECTOR."""
    _handle("dom.hover", {"selector": selector})
    console.print(f"[green]Hovered:[/green] {selector}")


@dom_group.command("check")
@click.argument("selector")
def dom_check(selector):
    """Check a checkbox matching CSS SELECTOR."""
    _handle("dom.check", {"selector": selector})
    console.print(f"[green]Checked:[/green] {selector}")


@dom_group.command("uncheck")
@click.argument("selector")
def dom_uncheck(selector):
    """Uncheck a checkbox matching CSS SELECTOR."""
    _handle("dom.uncheck", {"selector": selector})
    console.print(f"[green]Unchecked:[/green] {selector}")


@dom_group.command("clear")
@click.argument("selector")
def dom_clear(selector):
    """Clear the value of an input matching CSS SELECTOR."""
    _handle("dom.clear", {"selector": selector})
    console.print(f"[green]Cleared:[/green] {selector}")


@dom_group.command("focus")
@click.argument("selector")
def dom_focus(selector):
    """Focus the element matching CSS SELECTOR."""
    _handle("dom.focus", {"selector": selector})
    console.print(f"[green]Focused:[/green] {selector}")


@dom_group.command("submit")
@click.argument("selector")
def dom_submit(selector):
    """Submit the form that contains the element matching CSS SELECTOR."""
    _handle("dom.submit", {"selector": selector})
    console.print(f"[green]Submitted form for:[/green] {selector}")


@dom_group.command("poll")
@click.argument("selector")
@click.argument("pattern")
@click.option("--attr", default=None, help="Attribute or property to read (default: textContent/value)")
@click.option("--timeout", type=float, default=30.0, show_default=True, help="Max seconds to wait")
@click.option("--interval", type=float, default=0.5, show_default=True, help="Poll interval in seconds")
@click.option("--tab", "tab_id", type=int, default=None, help="Tab ID (default: active tab)")
def dom_poll(selector, pattern, attr, timeout, interval, tab_id):
    """Poll SELECTOR until its text/value matches regex PATTERN."""
    result = _handle("dom.poll", {
        "selector": selector,
        "pattern": pattern,
        "attr": attr,
        "timeout": int(timeout * 1000),
        "interval": int(interval * 1000),
        "tabId": tab_id,
    })
    value = result.get("value", "") if isinstance(result, dict) else ""
    console.print(f"[green]Matched:[/green] {selector!r} = {value!r}")