#!/usr/bin/env python3
"""
Major Domo CLI - Transaction Operations

Commands for listing and filtering player transactions (trades, waivers, etc.).
"""

from typing import Annotated, List, Optional

import typer
from rich.panel import Panel
from cli_common import (
    state,
    console,
    output_json,
    output_table,
    handle_error,
    get_season,
    safe_nested,
)

transactions_app = typer.Typer(
    help="Transaction operations",
    invoke_without_command=True,
    no_args_is_help=False,
)


@transactions_app.callback()
def transactions_callback(
    ctx: typer.Context,
    team: Annotated[
        Optional[str], typer.Option("--team", "-t", help="Filter by team abbreviation")
    ] = None,
    week: Annotated[
        Optional[int], typer.Option("--week", "-w", help="Filter by specific week")
    ] = None,
    week_start: Annotated[
        Optional[int], typer.Option("--week-start", help="Start week for range")
    ] = None,
    week_end: Annotated[
        Optional[int], typer.Option("--week-end", help="End week for range")
    ] = None,
    player: Annotated[
        Optional[str], typer.Option("--player", "-p", help="Filter by player name")
    ] = None,
    season: Annotated[
        Optional[int], typer.Option("--season", "-s", help="Season number")
    ] = None,
    limit: Annotated[
        int, typer.Option("--limit", "-n", help="Max results to display")
    ] = 50,
    include_cancelled: Annotated[
        bool, typer.Option("--include-cancelled", help="Include cancelled transactions")
    ] = False,
):
    """
    List transactions with optional filters.

    By default, shows recent non-cancelled transactions for the current season.
    Use filters to narrow down results.

    Examples:
        majordomo transactions --team CAR
        majordomo transactions --week 5
        majordomo transactions --week-start 1 --week-end 4
        majordomo transactions --player "Mike Trout"
    """
    # Only invoke if no subcommand was called
    if ctx.invoked_subcommand is not None:
        return

    try:
        season = get_season(season)

        # Handle week vs week_start/week_end
        if week is not None:
            week_start = week
            week_end = week

        # Build filter parameters — include affiliate rosters (IL, MiL)
        if team:
            base = team.upper().removesuffix("MIL").removesuffix("IL")
            team_list = [base, f"{base}IL", f"{base}MiL"]
        else:
            team_list = None
        player_list = [player] if player else None

        # Get transactions from API
        transactions = state.api.get_transactions(
            season=season,
            team_abbrev=team_list,
            week_start=week_start,
            week_end=week_end,
            player_name=player_list,
            cancelled=True if include_cancelled else False,
        )

        # Filter out cancelled transactions unless explicitly requested
        if not include_cancelled:
            transactions = [t for t in transactions if not t.get("cancelled", False)]

        # Limit results
        transactions = transactions[:limit]

        if state.json_output:
            output_json(transactions)
            return

        if not transactions:
            console.print(
                f"[yellow]No transactions found for the given filters (Season {season})[/yellow]"
            )
            return

        # Build table rows
        rows = []
        for t in transactions:
            player_name = safe_nested(t, "player", "name")
            old_abbrev = safe_nested(t, "oldteam", "abbrev")
            new_abbrev = safe_nested(t, "newteam", "abbrev")

            rows.append(
                [
                    t.get("week", ""),
                    player_name,
                    old_abbrev,
                    new_abbrev,
                    t.get("moveid", ""),
                ]
            )

        # Build title with filters
        title_parts = [f"Transactions (Season {season})"]
        if team:
            title_parts.append(f"Team: {team}")
        if week:
            title_parts.append(f"Week {week}")
        elif week_start and week_end:
            title_parts.append(f"Weeks {week_start}-{week_end}")
        if player:
            title_parts.append(f"Player: {player}")

        title = " | ".join(title_parts)

        output_table(title, ["Week", "Player", "From", "To", "Move ID"], rows)

    except Exception as e:
        handle_error(e)


@transactions_app.command("list")
def transactions_list(
    team: Annotated[
        Optional[str], typer.Option("--team", "-t", help="Filter by team abbreviation")
    ] = None,
    week: Annotated[
        Optional[int], typer.Option("--week", "-w", help="Filter by specific week")
    ] = None,
    week_start: Annotated[
        Optional[int], typer.Option("--week-start", help="Start week for range")
    ] = None,
    week_end: Annotated[
        Optional[int], typer.Option("--week-end", help="End week for range")
    ] = None,
    player: Annotated[
        Optional[str], typer.Option("--player", "-p", help="Filter by player name")
    ] = None,
    season: Annotated[
        Optional[int], typer.Option("--season", "-s", help="Season number")
    ] = None,
    limit: Annotated[
        int, typer.Option("--limit", "-n", help="Max results to display")
    ] = 50,
    include_cancelled: Annotated[
        bool, typer.Option("--include-cancelled", help="Include cancelled transactions")
    ] = False,
):
    """
    List transactions with optional filters (explicit command).

    This is the same as calling 'majordomo transactions' without a subcommand.
    """
    try:
        season = get_season(season)

        # Handle week vs week_start/week_end
        if week is not None:
            week_start = week
            week_end = week

        # Build filter parameters — include affiliate rosters (IL, MiL)
        if team:
            base = team.upper().removesuffix("MIL").removesuffix("IL")
            team_list = [base, f"{base}IL", f"{base}MiL"]
        else:
            team_list = None
        player_list = [player] if player else None

        # Get transactions from API
        transactions = state.api.get_transactions(
            season=season,
            team_abbrev=team_list,
            week_start=week_start,
            week_end=week_end,
            player_name=player_list,
            cancelled=True if include_cancelled else False,
        )

        # Filter out cancelled transactions unless explicitly requested
        if not include_cancelled:
            transactions = [t for t in transactions if not t.get("cancelled", False)]

        # Limit results
        transactions = transactions[:limit]

        if state.json_output:
            output_json(transactions)
            return

        if not transactions:
            console.print(
                f"[yellow]No transactions found for the given filters (Season {season})[/yellow]"
            )
            return

        # Build table rows
        rows = []
        for t in transactions:
            player_name = safe_nested(t, "player", "name")
            old_abbrev = safe_nested(t, "oldteam", "abbrev")
            new_abbrev = safe_nested(t, "newteam", "abbrev")

            rows.append(
                [
                    t.get("week", ""),
                    player_name,
                    old_abbrev,
                    new_abbrev,
                    t.get("moveid", ""),
                ]
            )

        # Build title with filters
        title_parts = [f"Transactions (Season {season})"]
        if team:
            title_parts.append(f"Team: {team}")
        if week:
            title_parts.append(f"Week {week}")
        elif week_start and week_end:
            title_parts.append(f"Weeks {week_start}-{week_end}")
        if player:
            title_parts.append(f"Player: {player}")

        title = " | ".join(title_parts)

        output_table(title, ["Week", "Player", "From", "To", "Move ID"], rows)

    except Exception as e:
        handle_error(e)


@transactions_app.command("simulate")
def transactions_simulate(
    team: Annotated[str, typer.Argument(help="Team abbreviation (e.g., CLS)")],
    moves: Annotated[
        str,
        typer.Argument(
            help="Moves as 'Player:Target,Player:Target' (e.g., 'Stott:CLSMiL,Walker:CLS')"
        ),
    ],
    season: Annotated[
        Optional[int], typer.Option("--season", "-s", help="Season number")
    ] = None,
):
    """
    Simulate transactions and check compliance without making changes.

    Validates that after all proposed moves:
    - Active (ML) roster has exactly 26 players
    - Total ML sWAR does not exceed team salary cap

    Examples:
        transactions simulate CLS "Stott:CLSMiL,Walker:CLS,Castellanos:FA,Martin:CLS"
        transactions simulate DEN "Player1:DENMiL,Player2:DEN"
    """
    try:
        season = get_season(season)
        team_upper = team.upper()

        # Parse moves
        parsed_moves: List[tuple] = []
        for move_str in moves.split(","):
            move_str = move_str.strip()
            if not move_str:
                continue
            parts = move_str.split(":")
            if len(parts) != 2 or not parts[0].strip() or not parts[1].strip():
                console.print(f"[red]Invalid move format:[/red] '{move_str}'")
                console.print("Expected format: 'Player Name:TARGET'")
                raise typer.Exit(1)
            parsed_moves.append((parts[0].strip(), parts[1].strip().upper()))

        if not parsed_moves:
            console.print("[red]No moves provided[/red]")
            raise typer.Exit(1)

        # Get team info (includes salary_cap)
        team_data = state.api.get_team(abbrev=team_upper, season=season)
        salary_cap = team_data.get("salary_cap")

        # Get current roster
        roster = state.api.get_team_roster(team_id=team_data["id"], which="current")
        active_players = roster.get("active", {}).get("players", [])

        # Build current ML state: {player_name: wara}
        ml_roster = {}
        for p in active_players:
            ml_roster[p["name"]] = float(p.get("wara", 0) or 0)

        current_count = len(ml_roster)
        current_swar = sum(ml_roster.values())

        # Simulate each move
        move_details = []
        errors = []

        for player_name, target in parsed_moves:
            # Look up the player
            player = state.api.get_player(name=player_name, season=season)
            if not player:
                search = state.api.search_players(
                    query=player_name, season=season, limit=1
                )
                if search:
                    player = search[0]
                else:
                    errors.append(f"Player '{player_name}' not found")
                    continue

            p_name = player["name"]
            p_wara = float(player.get("wara", 0) or 0)
            p_team = safe_nested(player, "team", "abbrev", default="?")

            # Determine if this move adds to or removes from ML
            target_is_ml = target == team_upper
            currently_on_ml = p_name in ml_roster

            impact = ""

            if currently_on_ml and not target_is_ml:
                # Removing from ML (demote, release, trade away)
                del ml_roster[p_name]
                impact = f"[red]-{p_wara:.2f}[/red]"
            elif not currently_on_ml and target_is_ml:
                # Adding to ML (promote, sign, trade in)
                ml_roster[p_name] = p_wara
                impact = f"[green]+{p_wara:.2f}[/green]"
            elif currently_on_ml and target_is_ml:
                impact = "[dim]no change (already ML)[/dim]"
            else:
                impact = "[dim]no ML impact[/dim]"

            move_details.append(
                (p_name, f"{p_team} → {target}", f"{p_wara:.2f}", impact)
            )

        # Calculate post-transaction state
        post_count = len(ml_roster)
        post_swar = sum(ml_roster.values())

        # Output
        if state.json_output:
            output_json(
                {
                    "team": team_upper,
                    "salary_cap": salary_cap,
                    "before": {
                        "ml_count": current_count,
                        "ml_swar": round(current_swar, 2),
                    },
                    "after": {
                        "ml_count": post_count,
                        "ml_swar": round(post_swar, 2),
                    },
                    "moves": [
                        {"player": m[0], "move": m[1], "wara": m[2]}
                        for m in move_details
                    ],
                    "errors": errors,
                    "roster_ok": post_count == 26,
                    "cap_ok": post_swar <= salary_cap if salary_cap else True,
                }
            )
            return

        # Print errors if any
        for err in errors:
            console.print(f"[red]Error:[/red] {err}")

        # Moves table
        output_table(
            f"Simulated Moves for {team_upper}",
            ["Player", "Move", "WARA", "ML Impact"],
            move_details,
        )

        console.print()

        # Compliance summary
        roster_ok = post_count == 26
        cap_ok = post_swar <= salary_cap if salary_cap else True
        cap_space = salary_cap - post_swar if salary_cap else 0

        roster_status = "[green]PASS[/green]" if roster_ok else "[red]FAIL[/red]"
        cap_status = "[green]PASS[/green]" if cap_ok else "[red]FAIL[/red]"

        panel = Panel(
            f"[bold]ML Roster:[/bold]  {current_count} → {post_count}  {roster_status}\n"
            f"[bold]ML sWAR:[/bold]   {current_swar:.2f} → {post_swar:.2f}\n"
            f"[bold]Salary Cap:[/bold] {salary_cap:.1f}\n"
            f"[bold]Cap Space:[/bold]  {cap_space:.2f}  {cap_status}",
            title="Compliance Check",
            border_style="green" if (roster_ok and cap_ok) else "red",
        )
        console.print(panel)

        if not roster_ok:
            console.print(
                f"\n[red]Roster must be exactly 26. Currently {post_count}.[/red]"
            )
        if not cap_ok:
            console.print(
                f"\n[red]Over salary cap by {post_swar - salary_cap:.2f} sWAR.[/red]"
            )

    except typer.Exit:
        raise
    except Exception as e:
        handle_error(e)