import os
import asyncio
from io import BytesIO
from nio import AsyncClient, UploadResponse, RoomSendResponse


async def send_order(pdf_path: str, analysis: dict, room_id: str, comment: str = ""):
    matrix_user = os.environ.get("MATRIX_USER")
    matrix_pass = os.environ.get("MATRIX_PASS")
    homeserver = os.environ.get("MATRIX_HOMESERVER", "http://localhost:8008")

    if not matrix_user or not matrix_pass:
        raise RuntimeError("Missing MATRIX_USER or MATRIX_PASS in environment")

    client = AsyncClient(homeserver, matrix_user)
    login_resp = await client.login(matrix_pass)
    if getattr(login_resp, "access_token", None) is None:
        await client.close()
        raise RuntimeError(f"Failed to login to Matrix: {login_resp}")

    # Build summary text
    summary_lines = [
        f"File: {analysis['filename']}",
        f"Grand total: {analysis['grand_total']} €",
        f"  - Black/White: {analysis['total_area_black']:.2f} m² = {analysis['total_cost_black']} €",
        f"  - Color: {analysis['total_area_color']:.2f} m² = {analysis['total_cost_color']} €",
        "",
        "Page details:",
    ]
    for page in analysis["pages"]:
        summary_lines.append(
            f"Page {page['page']}: {page['width_m']*1000:.0f}×{page['height_m']*1000:.0f} mm, "
            f"{'Color' if page['is_color'] else 'B/W'}, Cost {page['cost']} €"
        )
    if comment.strip():
        summary_lines.append("\nUser comment:\n" + comment.strip())
    summary_text = "\n".join(summary_lines)

    # Send text summary
    text_resp = await client.room_send(
        room_id=room_id,
        message_type="m.room.message",
        content={
            "msgtype": "m.text",
            "body": f"New print order submitted:\n\n{summary_text}",
        },
    )
    if not (isinstance(text_resp, RoomSendResponse) and text_resp.event_id):
        await client.logout()
        await client.close()
        raise RuntimeError(f"Failed to send order summary: {text_resp}")

    # Upload PDF
    with open(pdf_path, "rb") as f:
        pdf_bytes = f.read()

    upload_resp, upload_err = await client.upload(
        data_provider=BytesIO(pdf_bytes),
        content_type="application/pdf",
        filename=os.path.basename(pdf_path),
        filesize=len(pdf_bytes),
    )

    if upload_err:
        await client.logout()
        await client.close()
        raise RuntimeError(f"Failed to upload PDF: {upload_err}")

    if not (isinstance(upload_resp, UploadResponse) and upload_resp.content_uri):
        await client.logout()
        await client.close()
        raise RuntimeError(f"Failed to upload PDF: {upload_resp}")

    # Send PDF as separate file message
    file_resp = await client.room_send(
        room_id=room_id,
        message_type="m.room.message",
        content={
            "msgtype": "m.file",
            "body": os.path.basename(pdf_path),
            "url": upload_resp.content_uri,
        },
    )

    if not (isinstance(file_resp, RoomSendResponse) and file_resp.event_id):
        await client.logout()
        await client.close()
        raise RuntimeError(f"Failed to send PDF message: {file_resp}")

    await client.logout()
    await client.close()
    print(f"✅ Text summary and PDF sent to room {room_id}")


def send_order_sync(pdf_path: str, analysis: dict, room_id: str, comment: str = ""):
    asyncio.run(send_order(pdf_path, analysis, room_id, comment))