"""Send formatted activity report tables to each team's Discord channel.

Parses catch_up_report.md and posts a monospace table of each member's Discord
and GitHub activity stats to their respective team channel.

Data files (place in data/):
  - catch_up_report.md  Activity report generated by catch_up_report.py

Env vars:
  - DISCORD_BOT_TOKEN  Bot token for the Discord API
"""

import asyncio
import os

import aiohttp

DISCORD_BOT_TOKEN = os.environ["DISCORD_BOT_TOKEN"]
GUILD_ID = "692816967895220344"
API_BASE = "https://discord.com/api/v10"

CHANNEL_IDS = {
    "Crimson Dahlia": "1464316744909852682",
    "Rose Camellia": "1464316751268286611",
    "Amber Wisteria": "1464316761410113641",
    "Ivory Orchid": "1464316770889240730",
    "Teal Iris": "1464316776459407448",
    "Peach Gardenia": "1464316785040953543",
    "Violet Carnation": "1464316805261824032",
    "Azure Lotus": "1464316814455472139",
    "Coral Sunflower": "1464316819711066263",
    "Indigo Tulip": "1464316826384072925",
    "Scarlet Hydrangea": "1464316839306985506",
    "Mint Narcissus": "1464316844251807952",
    "Sage Marigold": "1464316850669093040",
}

REPORT_PATH = os.path.join(
    os.path.dirname(__file__), "..", "..", "data", "catch_up_report.md"
)

FIELDS = [
    ("Discord Username", "Name", 18),
    ("Discord Messages", "Msgs", 5),
    ("PRs Opened", "PRs", 4),
    ("Issues Opened", "Issues", 6),
    ("Issue Comments", "Issue♟", 7),
    ("PR Comments", "PR♟", 5),
    ("PR Reviews", "Reviews", 7),
    ("Commits", "Commits", 7),
]


def parse_report(path: str) -> dict[str, list[dict]]:
    """Parse the markdown table from catch_up_report.md into team → rows."""
    teams: dict[str, list[dict]] = {}
    with open(path, encoding="utf-8") as f:
        lines = f.readlines()

    header_line = None
    for i, line in enumerate(lines):
        if line.startswith("| Discord ID |"):
            header_line = i
            break

    if header_line is None:
        raise ValueError("Could not find table header in report")

    headers = [h.strip() for h in lines[header_line].strip().strip("|").split("|")]
    for line in lines[header_line + 2 :]:
        line = line.strip()
        if not line.startswith("|"):
            break
        row_values = [v.strip() for v in line.strip().strip("|").split("|")]
        row = dict(zip(headers, row_values))
        team = row["Team"]
        teams.setdefault(team, []).append(row)

    return teams


def format_table(members: list[dict]) -> str:
    """Format a team's member list as a monospace table for Discord."""
    members = sorted(members, key=lambda r: int(r["Discord Messages"]), reverse=True)

    col_widths = [width for _, _, width in FIELDS]
    col_headers = [header for _, header, _ in FIELDS]

    name_col_index = 0
    max_name = max(len(m["Discord Username"]) for m in members)
    col_widths[name_col_index] = max(col_widths[name_col_index], max_name)

    def pad(val: str, width: int, right_align: bool = False) -> str:
        return val.rjust(width) if right_align else val.ljust(width)

    header_row = "  ".join(
        pad(col_headers[i], col_widths[i], right_align=(i > 0))
        for i in range(len(FIELDS))
    )
    separator = "  ".join("-" * w for w in col_widths)

    rows = []
    for m in members:
        source_keys = [key for key, _, _ in FIELDS]
        values = [m[key] for key in source_keys]
        row = "  ".join(
            pad(values[i], col_widths[i], right_align=(i > 0))
            for i in range(len(FIELDS))
        )
        rows.append(row)

    return "\n".join([header_row, separator] + rows)


async def send_message(
    session: aiohttp.ClientSession, channel_id: str, content: str
) -> None:
    """Send a message to a Discord channel."""
    headers = {
        "Authorization": f"Bot {DISCORD_BOT_TOKEN}",
        "Content-Type": "application/json",
    }
    url = f"{API_BASE}/channels/{channel_id}/messages"
    while True:
        async with session.post(
            url, json={"content": content}, headers=headers
        ) as resp:
            if resp.status == 429:
                data = await resp.json()
                retry_after = data.get("retry_after", 5)
                print(f"    Rate limited — sleeping {retry_after}s...")
                await asyncio.sleep(retry_after)
                continue
            if resp.status not in (200, 201):
                text = await resp.text()
                print(f"    ERROR {resp.status}: {text}")
            return


async def main() -> None:
    """Send activity tables to all team channels."""
    teams = parse_report(REPORT_PATH)
    team_names = list(CHANNEL_IDS.keys())
    print(f"Sending activity tables to {len(team_names)} channels...\n")

    async with aiohttp.ClientSession() as session:
        for i, team_name in enumerate(team_names, 1):
            channel_id = CHANNEL_IDS[team_name]
            members = teams.get(team_name, [])
            if not members:
                print(f"  [{i}/{len(team_names)}] {team_name} — no data, skipping")
                continue

            table = format_table(members)
            message = (
                f"**{team_name} — Activity Report (Feb 15–23)**\n```\n{table}\n```"
            )

            if len(message) > 2000:
                print(
                    f"  [{i}/{len(team_names)}] {team_name} — WARNING: "
                    f"message is {len(message)} chars (over 2000!)"
                )

            print(
                f"  [{i}/{len(team_names)}] Sending to {team_name}... ",
                end="",
                flush=True,
            )
            await send_message(session, channel_id, message)
            print("sent!")
            await asyncio.sleep(1)

    print("\nAll done! 🌸")


if __name__ == "__main__":
    asyncio.run(main())