from sanic import response
from app.core._config import UPLOADS_DIR
from app.core.storage import db_session
from app.core.content.content_id import ContentId
from app.core._utils.resolve_content import resolve_content
from app.core.models.node_storage import StoredContent
from app.core.logger import make_log
from datetime import datetime
from base58 import b58encode, b58decode
from mimetypes import guess_type
import os
import hashlib


async def s_api_v1_storage_post(request):
    assert request.ctx.user, "No authorized"
    if not request.files and not request.json:
        return response.json({"error": "No file provided"}, status=400)

    file_param = list(request.files.values())[0][0] if request.files else None
    # file_name_json = request.json.get("filename") if request.json else None

    if file_param:
        file_content = file_param.body
        file_name = file_param.name
    else:
        return response.json({"error": "No file provided"}, status=400)

    file_meta = {}
    file_mimetype, file_encoding = guess_type(file_name)
    if file_mimetype:
        file_meta["content_type"] = file_mimetype

    if file_encoding:
        file_meta["extension_encoding"] = file_encoding

    try:
        file_hash = b58encode(hashlib.sha256(file_content).digest()).decode()
        stored_content = request.ctx.db_session.query(StoredContent).filter(StoredContent.hash == file_hash).first()
        if stored_content:
            stored_cid = stored_content.cid.serialize_v1()
            return {
                "content_sha256": file_hash,
                "content_id_v1": stored_cid,
                "content_url": f"dmy://storage?cid={stored_cid}",
            }

        new_content = StoredContent(
            type="local/content_bin",
            user_id=request.ctx.user.id,
            hash=file_hash,
            filename=file_name,
            meta=file_meta,
            created=datetime.now(),
            key_id=None,
        )
        request.ctx.db_session.add(new_content)
        request.ctx.db_session.commit()

        file_path = os.path.join(UPLOADS_DIR, file_hash)
        with open(file_path, "wb") as file:
            file.write(file_content)

        new_content_id = new_content.cid
        new_cid = new_content_id.serialize_v1()

        return response.json({
            "content_sha256": file_hash,
            "content_id_v1": new_cid,
            "content_url": f"dmy://storage?cid={new_cid}",
        })
    except BaseException as e:
        return response.json({"error": f"Error: {e}"}, status=500)


async def s_api_v1_storage_get(request, file_hash=None):
    content_id = file_hash
    cid, errmsg = resolve_content(content_id)
    if errmsg:
        return response.json({"error": errmsg}, status=400)

    content_sha256 = b58encode(cid.content_hash).decode()
    content = request.ctx.db_session.query(StoredContent).filter(StoredContent.hash == content_sha256).first()
    if not content:
        return response.json({"error": "File not found"}, status=404)

    make_log("Storage", f"File {content_sha256} requested by {request.ip}")
    file_path = os.path.join(UPLOADS_DIR, content_sha256)
    if not os.path.exists(file_path):
        return response.json({"error": "File not found"}, status=404)

    return await response.file(file_path)