import datetime
import json
from typing import Any, Dict, List, Optional, Tuple

import psycopg2
import psycopg2.extras

from .misc import requests_retry_session


class SandcrawlerPostgrestClient:
    def __init__(self, api_url: str = "http://wbgrp-svc506.us.archive.org:3030", **kwargs):
        self.api_url = api_url
        self.http_session = requests_retry_session()

    def get_cdx(self, url: str) -> Optional[dict]:
        resp = self.http_session.get(self.api_url + "/cdx", params=dict(url="eq." + url))
        resp.raise_for_status()
        return resp.json() or None

    def get_grobid(self, sha1: str) -> Optional[dict]:
        resp = self.http_session.get(
            self.api_url + "/grobid", params=dict(sha1hex="eq." + sha1)
        )
        resp.raise_for_status()
        resp_json = resp.json()
        if resp_json:
            return resp_json[0]
        else:
            return None

    def get_pdftrio(self, sha1: str) -> Optional[dict]:
        resp = self.http_session.get(
            self.api_url + "/pdftrio", params=dict(sha1hex="eq." + sha1)
        )
        resp.raise_for_status()
        resp_json = resp.json()
        if resp_json:
            return resp_json[0]
        else:
            return None

    def get_pdf_meta(self, sha1: str) -> Optional[dict]:
        resp = self.http_session.get(
            self.api_url + "/pdf_meta", params=dict(sha1hex="eq." + sha1)
        )
        resp.raise_for_status()
        resp_json = resp.json()
        if resp_json:
            return resp_json[0]
        else:
            return None

    def get_html_meta(self, sha1hex: str) -> Optional[dict]:
        resp = self.http_session.get(
            self.api_url + "/html_meta",
            params=dict(sha1hex=f"eq.{sha1hex}"),
        )
        resp.raise_for_status()
        resp_json = resp.json()
        if resp_json:
            return resp_json[0]
        else:
            return None

    def get_file_meta(self, sha1: str) -> Optional[dict]:
        resp = self.http_session.get(
            self.api_url + "/file_meta", params=dict(sha1hex="eq." + sha1)
        )
        resp.raise_for_status()
        resp_json = resp.json()
        if resp_json:
            return resp_json[0]
        else:
            return None

    def get_ingest_file_result(self, ingest_type: str, url: str) -> Optional[dict]:
        resp = self.http_session.get(
            self.api_url + "/ingest_file_result",
            params=dict(ingest_type=f"eq.{ingest_type}", base_url=f"eq.{url}"),
        )
        resp.raise_for_status()
        resp_json = resp.json()
        if resp_json:
            return resp_json[0]
        else:
            return None

    def get_ingest_fileset_platform(self, ingest_type: str, url: str) -> Optional[dict]:
        resp = self.http_session.get(
            self.api_url + "/ingest_fileset_platform",
            params=dict(ingest_type=f"eq.{ingest_type}", base_url=f"eq.{url}"),
        )
        resp.raise_for_status()
        resp_json = resp.json()
        if resp_json:
            return resp_json[0]
        else:
            return None

    def get_crossref(self, doi: str) -> Optional[dict]:
        resp = self.http_session.get(self.api_url + "/crossref", params=dict(doi=f"eq.{doi}"))
        resp.raise_for_status()
        resp_json = resp.json()
        if resp_json:
            return resp_json[0]
        else:
            return None

    def get_crossref_with_refs(self, doi: str) -> Optional[dict]:
        resp = self.http_session.get(
            self.api_url + "/crossref_with_refs", params=dict(doi=f"eq.{doi}")
        )
        resp.raise_for_status()
        resp_json = resp.json()
        if resp_json:
            return resp_json[0]
        else:
            return None

    def get_grobid_refs(self, source: str, source_id: str) -> Optional[dict]:
        resp = self.http_session.get(
            self.api_url + "/grobid_refs",
            params=dict(source=f"eq.{source}", source_id=f"eq.{source_id}"),
        )
        resp.raise_for_status()
        resp_json = resp.json()
        if resp_json:
            return resp_json[0]
        else:
            return None


class SandcrawlerPostgresClient:
    def __init__(self, db_url: str, **kwargs):
        self.conn = psycopg2.connect(db_url)

    def cursor(self) -> psycopg2.extensions.cursor:
        return self.conn.cursor()

    def commit(self) -> None:
        self.conn.commit()

    def _inserts_and_updates(self, resp: List[Tuple], on_conflict: str) -> Tuple[int, int]:
        resp_codes = [int(r[0]) for r in resp]
        inserts = len([r for r in resp_codes if r == 0])
        if on_conflict == "update":
            updates = len([r for r in resp_codes if r != 0])
        else:
            updates = 0
        return (inserts, updates)

    def insert_cdx(
        self,
        cur: psycopg2.extensions.cursor,
        batch: List[Dict[str, Any]],
        on_conflict: str = "nothing",
    ) -> Tuple[int, int]:
        sql = """
            INSERT INTO
            cdx (url, datetime, sha1hex, mimetype, warc_path, warc_csize, warc_offset)
            VALUES %s
            ON CONFLICT ON CONSTRAINT cdx_pkey DO
        """
        if on_conflict.lower() == "nothing":
            sql += " NOTHING"
        else:
            raise NotImplementedError("on_conflict: {}".format(on_conflict))
        sql += " RETURNING xmax;"

        batch = [d for d in batch if d.get("warc_path")]
        if not batch:
            return (0, 0)
        rows = [
            (
                d["url"],
                d["datetime"],
                d["sha1hex"],
                d["mimetype"],
                d["warc_path"],
                int(d["warc_csize"]),
                int(d["warc_offset"]),
            )
            for d in batch
        ]
        # filter out duplicate rows by key (url, datetime)
        row_dict = dict()
        for b in rows:
            row_dict[(b[0], b[1])] = b
        rows = list(row_dict.values())
        resp = psycopg2.extras.execute_values(cur, sql, rows, page_size=250, fetch=True)
        return self._inserts_and_updates(resp, on_conflict)

    def insert_file_meta(
        self,
        cur: psycopg2.extensions.cursor,
        batch: List[Dict[str, Any]],
        on_conflict: str = "nothing",
    ) -> Tuple[int, int]:
        sql = """
            INSERT INTO
            file_meta(sha1hex, sha256hex, md5hex, size_bytes, mimetype)
            VALUES %s
            ON CONFLICT (sha1hex) DO
        """
        if on_conflict.lower() == "nothing":
            sql += " NOTHING"
        elif on_conflict.lower() == "update":
            sql += """ UPDATE SET
                sha256hex=EXCLUDED.sha256hex,
                md5hex=EXCLUDED.md5hex,
                size_bytes=EXCLUDED.size_bytes,
                mimetype=EXCLUDED.mimetype
            """
        else:
            raise NotImplementedError("on_conflict: {}".format(on_conflict))
        sql += " RETURNING xmax;"
        rows = [
            (d["sha1hex"], d["sha256hex"], d["md5hex"], int(d["size_bytes"]), d["mimetype"])
            for d in batch
        ]
        # filter out duplicate rows by key (sha1hex)
        row_dict = dict()
        for b in rows:
            row_dict[b[0]] = b
        rows = list(row_dict.values())
        resp = psycopg2.extras.execute_values(cur, sql, rows, page_size=250, fetch=True)
        return self._inserts_and_updates(resp, on_conflict)

    def insert_grobid(
        self,
        cur: psycopg2.extensions.cursor,
        batch: List[Dict[str, Any]],
        on_conflict: str = "nothing",
    ) -> Tuple[int, int]:
        sql = """
            INSERT INTO
            grobid (sha1hex, grobid_version, status_code, status, fatcat_release, updated, metadata)
            VALUES %s
            ON CONFLICT (sha1hex) DO
        """
        if on_conflict.lower() == "nothing":
            sql += " NOTHING"
        elif on_conflict.lower() == "update":
            sql += """ UPDATE SET
                grobid_version=EXCLUDED.grobid_version,
                status_code=EXCLUDED.status_code,
                status=EXCLUDED.status,
                fatcat_release=EXCLUDED.fatcat_release,
                updated=EXCLUDED.updated,
                metadata=EXCLUDED.metadata
            """
        else:
            raise NotImplementedError("on_conflict: {}".format(on_conflict))
        sql += " RETURNING xmax;"
        for r in batch:
            if r.get("metadata"):
                # sometimes these are only in metadata; shouldn't pass through
                # though (to save database space)
                dupe_fields = ("fatcat_release", "grobid_version")
                for k in dupe_fields:
                    if k not in r:
                        r[k] = r["metadata"].get(k)
                    r["metadata"].pop(k, None)
                r["metadata"] = json.dumps(r["metadata"], sort_keys=True)
        now = datetime.datetime.now()
        rows = [
            (
                d["key"],
                d.get("grobid_version") or None,
                d["status_code"],
                d["status"],
                d.get("fatcat_release") or None,
                d.get("updated") or now,
                d.get("metadata") or None,
            )
            for d in batch
        ]
        # filter out duplicate rows by key (sha1hex)
        row_dict = dict()
        for b in rows:
            row_dict[b[0]] = b
        rows = list(row_dict.values())
        resp = psycopg2.extras.execute_values(cur, sql, rows, page_size=250, fetch=True)
        return self._inserts_and_updates(resp, on_conflict)

    def insert_pdf_meta(
        self, cur: psycopg2.extensions.cursor, rows: List[Tuple], on_conflict: str = "nothing"
    ) -> Tuple[int, int]:
        """
        batch elements are expected to have .to_sql_tuple() method
        """
        sql = """
            INSERT INTO
            pdf_meta (sha1hex, updated, status, has_page0_thumbnail, page_count, word_count, page0_height, page0_width, permanent_id, pdf_created, pdf_version, metadata)
            VALUES %s
            ON CONFLICT (sha1hex) DO
        """
        if on_conflict.lower() == "nothing":
            sql += " NOTHING"
        elif on_conflict.lower() == "update":
            sql += """ UPDATE SET
                updated=EXCLUDED.updated,
                status=EXCLUDED.status,
                has_page0_thumbnail=EXCLUDED.has_page0_thumbnail,
                page_count=EXCLUDED.page_count,
                word_count=EXCLUDED.word_count,
                page0_height=EXCLUDED.page0_height,
                page0_width=EXCLUDED.page0_width,
                permanent_id=EXCLUDED.permanent_id,
                pdf_created=EXCLUDED.pdf_created,
                pdf_version=EXCLUDED.pdf_version,
                metadata=EXCLUDED.metadata
            """
        else:
            raise NotImplementedError("on_conflict: {}".format(on_conflict))
        sql += " RETURNING xmax;"
        # filter out duplicate rows by key (sha1hex)
        row_dict = dict()
        for b in rows:
            row_dict[b[0]] = b
        rows = list(row_dict.values())
        resp = psycopg2.extras.execute_values(cur, sql, rows, page_size=250, fetch=True)
        return self._inserts_and_updates(resp, on_conflict)

    def insert_html_meta(
        self, cur: psycopg2.extensions.cursor, rows: List[Tuple], on_conflict: str = "nothing"
    ) -> Tuple[int, int]:
        """
        batch elements are expected to have .to_sql_tuple() method
        """
        sql = """
            INSERT INTO
            html_meta (sha1hex, updated, status, scope, has_teixml, has_thumbnail, word_count, biblio, resources)
            VALUES %s
            ON CONFLICT (sha1hex) DO
        """
        if on_conflict.lower() == "nothing":
            sql += " NOTHING"
        elif on_conflict.lower() == "update":
            sql += """ UPDATE SET
                updated=EXCLUDED.updated,
                status=EXCLUDED.status,
                scope=EXCLUDED.scope,
                has_teixml=EXCLUDED.has_teixml,
                has_thumbnail=EXCLUDED.has_thumbnail,
                word_count=EXCLUDED.word_count,
                biblio=EXCLUDED.biblio,
                resources=EXCLUDED.resources
            """
        else:
            raise NotImplementedError("on_conflict: {}".format(on_conflict))
        sql += " RETURNING xmax;"
        # filter out duplicate rows by key (sha1hex)
        row_dict = dict()
        for b in rows:
            row_dict[b[0]] = b
        rows = list(row_dict.values())
        resp = psycopg2.extras.execute_values(cur, sql, rows, page_size=250, fetch=True)
        return self._inserts_and_updates(resp, on_conflict)

    def insert_pdftrio(
        self,
        cur: psycopg2.extensions.cursor,
        batch: List[Dict[str, Any]],
        on_conflict: str = "nothing",
    ) -> Tuple[int, int]:
        sql = """
            INSERT INTO
            pdftrio (sha1hex, updated, status_code, status, pdftrio_version,
                     models_date, ensemble_score, bert_score, linear_score,
                     image_score)
            VALUES %s
            ON CONFLICT (sha1hex) DO
        """
        if on_conflict.lower() == "nothing":
            sql += " NOTHING"
        elif on_conflict.lower() == "update":
            sql += """ UPDATE SET
                updated=EXCLUDED.updated,
                status_code=EXCLUDED.status_code,
                status=EXCLUDED.status,
                pdftrio_version=EXCLUDED.pdftrio_version,
                models_date=EXCLUDED.models_date,
                ensemble_score=EXCLUDED.ensemble_score,
                bert_score=EXCLUDED.bert_score,
                linear_score=EXCLUDED.linear_score,
                image_score=EXCLUDED.image_score
            """
        else:
            raise NotImplementedError("on_conflict: {}".format(on_conflict))
        sql += " RETURNING xmax;"
        now = datetime.datetime.now()
        rows = [
            (
                d["key"],
                d.get("updated") or now,
                d["status_code"],
                d["status"],
                d.get("versions", {}).get("pdftrio_version") or None,
                d.get("versions", {}).get("models_date") or None,
                d.get("ensemble_score"),
                d.get("bert_score"),
                d.get("linear_score"),
                d.get("image_score"),
            )
            for d in batch
        ]
        # filter out duplicate rows by key (sha1hex)
        row_dict = dict()
        for b in rows:
            row_dict[b[0]] = b
        rows = list(row_dict.values())
        resp = psycopg2.extras.execute_values(cur, sql, rows, page_size=250, fetch=True)
        return self._inserts_and_updates(resp, on_conflict)

    def insert_ingest_request(
        self,
        cur: psycopg2.extensions.cursor,
        batch: List[Dict[str, Any]],
        on_conflict: str = "nothing",
    ) -> Tuple[int, int]:
        sql = """
            INSERT INTO
            ingest_request (link_source, link_source_id, ingest_type, base_url, ingest_request_source, release_stage, request)
            VALUES %s
            ON CONFLICT ON CONSTRAINT ingest_request_pkey DO
        """
        if on_conflict.lower() == "nothing":
            sql += " NOTHING"
        else:
            raise NotImplementedError("on_conflict: {}".format(on_conflict))
        sql += " RETURNING xmax;"
        for r in batch:
            # in case these fields were already packed into 'request'
            extra = r.get("request", {})
            for k in ("ext_ids", "fatcat_release", "edit_extra", "rel"):
                if r.get(k):
                    extra[k] = r[k]
            if extra:
                r["extra"] = json.dumps(extra, sort_keys=True)
        rows = [
            (
                d["link_source"],
                d["link_source_id"],
                d["ingest_type"],
                d["base_url"],
                d.get("ingest_request_source"),
                d.get("release_stage") or None,
                d.get("extra") or None,
            )
            for d in batch
        ]
        # filter out duplicate rows by key (link_source, link_source_id, ingest_type, base_url)
        row_dict = dict()
        for b in rows:
            row_dict[(b[0], b[1], b[2], b[3])] = b
        rows = list(row_dict.values())
        resp = psycopg2.extras.execute_values(cur, sql, rows, page_size=250, fetch=True)
        return self._inserts_and_updates(resp, on_conflict)

    def insert_ingest_file_result(
        self,
        cur: psycopg2.extensions.cursor,
        batch: List[Dict[str, Any]],
        on_conflict: str = "nothing",
    ) -> Tuple[int, int]:
        sql = """
            INSERT INTO
            ingest_file_result (ingest_type, base_url, hit, status, terminal_url, terminal_dt, terminal_status_code, terminal_sha1hex)
            VALUES %s
            ON CONFLICT ON CONSTRAINT ingest_file_result_pkey DO
        """
        if on_conflict.lower() == "nothing":
            sql += " NOTHING"
        elif on_conflict.lower() == "update":
            sql += """ UPDATE SET
                updated=now(),
                hit=EXCLUDED.hit,
                status=EXCLUDED.status,
                terminal_url=EXCLUDED.terminal_url,
                terminal_dt=EXCLUDED.terminal_dt,
                terminal_status_code=EXCLUDED.terminal_status_code,
                terminal_sha1hex=EXCLUDED.terminal_sha1hex
            """
        else:
            raise NotImplementedError("on_conflict: {}".format(on_conflict))
        sql += " RETURNING xmax;"
        rows = [
            (
                d["ingest_type"],
                d["base_url"],
                bool(d["hit"]),
                d["status"],
                d.get("terminal_url"),
                d.get("terminal_dt"),
                d.get("terminal_status_code"),
                d.get("terminal_sha1hex"),
            )
            for d in batch
        ]
        # filter out duplicate rows by key (ingest_type, base_url)
        row_dict = dict()
        for b in rows:
            row_dict[(b[0], b[1])] = b
        rows = list(row_dict.values())
        resp = psycopg2.extras.execute_values(cur, sql, rows, page_size=250, fetch=True)
        return self._inserts_and_updates(resp, on_conflict)

    def insert_ingest_fileset_platform(
        self,
        cur: psycopg2.extensions.cursor,
        batch: List[Dict[str, Any]],
        on_conflict: str = "nothing",
    ) -> Tuple[int, int]:
        sql = """
            INSERT INTO
            ingest_fileset_platform (ingest_type, base_url, hit, status, platform_name, platform_domain, platform_id, ingest_strategy, total_size, file_count, archiveorg_item_name, archiveorg_item_bundle_path, web_bundle_url, web_bundle_dt, manifest)
            VALUES %s
            ON CONFLICT ON CONSTRAINT ingest_fileset_platform_pkeypkey DO
        """
        if on_conflict.lower() == "nothing":
            sql += " NOTHING"
        elif on_conflict.lower() == "update":
            sql += """ UPDATE SET
                updated=now(),
                hit=EXCLUDED.hit,
                status=EXCLUDED.status,
                platform_name=EXCLUDED.platform_name,
                platform_domain=EXCLUDED.platform_domain,
                platform_id=EXCLUDED.platform_id,
                ingest_strategy=EXCLUDED.ingest_strategy,
                total_size=EXCLUDED.total_size,
                file_count=EXCLUDED.file_count,
                archiveorg_item_name=EXCLUDED.archiveorg_item_name,
                archiveorg_item_bundle_path=EXCLUDED.archiveorg_item_bundle_path,
                web_bundle_url=EXCLUDED.web_bundle_url,
                web_bundle_dt=EXCLUDED.web_bundle_dt,
                manifest=EXCLUDED.manifest
            """
        else:
            raise NotImplementedError("on_conflict: {}".format(on_conflict))
        sql += " RETURNING xmax;"
        rows = [
            (
                d["ingest_type"],
                d["base_url"],
                bool(d["hit"]),
                d["status"],
                d.get("platform_name"),
                d.get("platform_domain"),
                d.get("platform_id"),
                d.get("ingest_strategy"),
                d.get("total_size"),
                d.get("file_count"),
                d.get("archiveorg_item_name"),
                d.get("archiveorg_item_bundle_path"),
                d.get("web_bundle_url"),
                d.get("web_bundle_dt"),
                d.get("manifest"),
            )
            for d in batch
        ]
        # filter out duplicate rows by key (ingest_type, base_url)
        row_dict = dict()
        for b in rows:
            row_dict[(b[0], b[1])] = b
        rows = list(row_dict.values())
        resp = psycopg2.extras.execute_values(cur, sql, rows, page_size=250, fetch=True)
        return self._inserts_and_updates(resp, on_conflict)

    def insert_crossref(
        self,
        cur: psycopg2.extensions.cursor,
        batch: List[Dict[str, Any]],
        on_conflict: str = "update",
    ) -> Tuple[int, int]:
        sql = """
            INSERT INTO
            crossref (doi, indexed, record)
            VALUES %s
            ON CONFLICT (doi) DO
        """
        if on_conflict.lower() == "nothing":
            sql += " NOTHING"
        elif on_conflict.lower() == "update":
            sql += """ UPDATE SET
                indexed=EXCLUDED.indexed,
                record=EXCLUDED.record
            """
        else:
            raise NotImplementedError("on_conflict: {}".format(on_conflict))
        sql += " RETURNING xmax;"
        rows = [
            (
                d["doi"],
                d.get("indexed") or None,
                json.dumps(d["record"], sort_keys=True),
            )
            for d in batch
        ]
        # filter out duplicate rows by key (sha1hex)
        row_dict = dict()
        for b in rows:
            row_dict[b[0]] = b
        rows = list(row_dict.values())
        resp = psycopg2.extras.execute_values(cur, sql, rows, page_size=250, fetch=True)
        return self._inserts_and_updates(resp, on_conflict)

    def insert_grobid_refs(
        self,
        cur: psycopg2.extensions.cursor,
        batch: List[Dict[str, Any]],
        on_conflict: str = "update",
    ) -> Tuple[int, int]:
        sql = """
            INSERT INTO
            grobid_refs (source, source_id, source_ts, updated, refs_json)
            VALUES %s
            ON CONFLICT (source, source_id) DO
        """
        if on_conflict.lower() == "nothing":
            sql += " NOTHING"
        elif on_conflict.lower() == "update":
            sql += """ UPDATE SET
                source_ts=EXCLUDED.source_ts,
                updated=EXCLUDED.updated,
                refs_json=EXCLUDED.refs_json
            """
        else:
            raise NotImplementedError("on_conflict: {}".format(on_conflict))
        sql += " RETURNING xmax;"
        now = datetime.datetime.now()
        rows = [
            (
                d["source"],
                d["source_id"],
                d.get("source_ts") or None,
                d.get("updated") or now,
                json.dumps(d["refs_json"], sort_keys=True),
            )
            for d in batch
        ]
        # filter out duplicate rows by key (sha1hex)
        row_dict = dict()
        for b in rows:
            row_dict[(b[0], b[1])] = b
        rows = list(row_dict.values())
        resp = psycopg2.extras.execute_values(cur, sql, rows, page_size=250, fetch=True)
        return self._inserts_and_updates(resp, on_conflict)