from textual.screen import Screen
from textual.containers import Vertical, Horizontal, VerticalScroll
from textual.widgets import Static, Button
from agentm.logic.db_functions import get_agents_for_game, delete_agent_by_id
from agentm.theme.palette import get_theme
from agentm.utils.logger import log_with_caller
from agentm.components.footer import AgentMFooter
from .create_agent import CreateAgentView
from .select_run import SelectRunView
from pathlib import Path

palette = get_theme()

class AgentCard(Static):
    def __init__(self, agent_data: dict, parent_view):
        super().__init__(classes="agent_card")
        self.agent_data = agent_data
        self.parent_view = parent_view

    def render(self) -> str:
        return f"""
[bold {palette.ACCENT}]{self.agent_data['name']}[/]
[dim]ID:[/] {self.agent_data['id']}
[dim]Created:[/] {self.agent_data.get('created_at', '—')}
[dim]Game ID:[/] {self.agent_data['game_id']}
        """.strip()

    async def on_click(self):
        await self.parent_view.display_agent_info(self.agent_data)


class AgentSelectView(Screen):
    BINDINGS = [
        ("escape", "app.pop_screen", "Back"),
        ("n", "create_agent", "New Agent"),
        ("r", "refresh_agents", "Refresh"),
        ("up", "scroll_up", "Scroll Up"),
        ("down", "scroll_down", "Scroll Down"),
    ]

    def __init__(self, game_metadata: dict):
        super().__init__()
        self.game_metadata = game_metadata
        self.selected_agent = None
        self.delete_mode = False

    def compose(self):
        ascii_path = Path(__file__).parent.parent / "assets" / "headers" / "agent_select.txt"
        try:
            header_text = ascii_path.read_text()
        except FileNotFoundError:
            header_text = "=== SELECT AGENT ==="

        self.header = Static(f"[{palette.ACCENT}]{header_text}[/{palette.ACCENT}]", classes="header")
        self.subheader = Static(f"[b]{self.game_metadata['title']}[/b]", classes="subheader")

        self.agent_list = VerticalScroll(id="agent_scroll")
        self.agent_info = Horizontal(id="agent_info_panel")

        self.confirm_button = Button("✅  Select Agent", id="confirm_agent_btn", classes="confirm_button", disabled=True)
        self.delete_button = Button("🗑️  Delete Agent", id="delete_agent_btn", classes="danger_button", disabled=True)
        self.create_button = Button("➕  Create Agent", id="create_agent_btn", classes="confirm_button")

        yield Vertical(
            self.header,
            self.subheader,
            self.agent_list,
            self.agent_info,
            self.create_button,
            AgentMFooter(compact=True),
            id="agent_select_layout"
        )

    async def on_mount(self):
        log_with_caller("debug", f"Mounted AgentSelectView for game_id: {self.game_metadata['game_id']}")
        await self.refresh_agent_list()

    async def on_resume(self):
        await self.refresh_agent_list()

    async def refresh_agent_list(self):
        try:
            for child in list(self.agent_list.children):
                await child.remove()

            agents = get_agents_for_game(self.game_metadata["game_id"])
            log_with_caller("info", f"Refreshed: {len(agents)} agents found for {self.game_metadata['game_id']}")

            if agents:
                for agent in agents:
                    await self.agent_list.mount(AgentCard(agent, self))
            else:
                await self.agent_list.mount(Static("[dim]No agents found for this game.[/dim]"))

            self.selected_agent = None
            self.delete_mode = False
            await self.display_agent_info(None)
        except Exception as e:
            log_with_caller("error", f"Error rendering agent list: {e}")

    async def display_agent_info(self, agent: dict | None):
        self.selected_agent = agent
        self.delete_mode = False
        await self.agent_info.remove_children()

        if not agent:
            await self.agent_info.mount(Static("[dim]Select an agent to view details[/dim]"))
            self.confirm_button.disabled = True
            self.delete_button.disabled = True
            return

        from rich.panel import Panel
        from rich.table import Table

        table = Table.grid(padding=(0, 1))
        table.add_column("Key", style="bold underline")
        table.add_column("Value", style=palette.ACCENT, overflow="fold")

        table.add_row("Name", agent["name"])
        table.add_row("Agent ID", str(agent["id"]))
        table.add_row("Game ID", agent["game_id"])
        table.add_row("Created", agent.get("created_at", "—"))
        table.add_row("Type", agent.get("agent_type", "—"))
        table.add_row("Framework", agent.get("framework", "—"))
        table.add_row("Imitation", str(agent.get("is_imitation", False)))

        info_panel = Static(Panel(table, title="Agent Info", border_style=palette.BORDER), classes="agent_info_box")
        button_column = Vertical(self.confirm_button, self.delete_button, classes="agent_action_box")

        await self.agent_info.mount(info_panel, button_column)
        self.confirm_button.disabled = False
        self.delete_button.disabled = False
        self.delete_button.label = "🗑️ Delete Agent"

    async def on_button_pressed(self, event: Button.Pressed) -> None:
        if event.button.id == "create_agent_btn":
            log_with_caller("info", "Create Agent button pressed.")
            await self.app.push_screen(CreateAgentView(self.game_metadata))

        elif event.button.id == "confirm_agent_btn" and self.selected_agent:
            log_with_caller("info", f"Agent confirmed: {self.selected_agent['name']}")
            await self.app.push_screen(SelectRunView(self.selected_agent))  

        elif event.button.id == "delete_agent_btn" and self.selected_agent:
            if not self.delete_mode:
                self.delete_mode = True
                self.delete_button.label = "❌ Confirm Delete"
                log_with_caller("warning", f"Pending deletion for agent: {self.selected_agent['name']}")
            else:
                log_with_caller("info", f"Deleting agent: {self.selected_agent['name']} ({self.selected_agent['id']})")
                delete_agent_by_id(self.selected_agent["id"])
                await self.refresh_agent_list()

    async def action_create_agent(self):
        await self.app.push_screen(CreateAgentView(self.game_metadata))

    async def action_refresh_agents(self):
        await self.refresh_agent_list()

    async def action_scroll_up(self):
        scroll = self.query_one("#agent_scroll", VerticalScroll)
        scroll.scroll_up()

    async def action_scroll_down(self):
        scroll = self.query_one("#agent_scroll", VerticalScroll)
        scroll.scroll_down()