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# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
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# specific language governing permissions and limitations
# under the License.
# pylint: disable=redefined-outer-name,arguments-renamed,fixme
from tempfile import TemporaryDirectory
from typing import Dict

import fastavro
import pytest

from pyiceberg.io import load_file_io
from pyiceberg.io.pyarrow import PyArrowFileIO
from pyiceberg.manifest import (
    DataFile,
    DataFileContent,
    FileFormat,
    ManifestContent,
    ManifestEntryStatus,
    ManifestFile,
    PartitionFieldSummary,
    read_manifest_list,
    write_manifest,
    write_manifest_list,
)
from pyiceberg.partitioning import PartitionField, PartitionSpec
from pyiceberg.schema import Schema
from pyiceberg.table.snapshots import Operation, Snapshot, Summary
from pyiceberg.transforms import IdentityTransform
from pyiceberg.typedef import Record, TableVersion
from pyiceberg.types import IntegerType, NestedField


def _verify_metadata_with_fastavro(avro_file: str, expected_metadata: Dict[str, str]) -> None:
    with open(avro_file, "rb") as f:
        reader = fastavro.reader(f)
        metadata = reader.metadata
        for k, v in expected_metadata.items():
            assert k in metadata
            assert metadata[k] == v


def test_read_manifest_entry(generated_manifest_entry_file: str) -> None:
    manifest = ManifestFile(
        manifest_path=generated_manifest_entry_file,
        manifest_length=0,
        partition_spec_id=0,
        added_snapshot_id=0,
        sequence_number=0,
        partitions=[],
    )
    manifest_entries = manifest.fetch_manifest_entry(PyArrowFileIO())
    manifest_entry = manifest_entries[0]

    assert manifest_entry.status == ManifestEntryStatus.ADDED
    assert manifest_entry.snapshot_id == 8744736658442914487
    assert manifest_entry.data_sequence_number == 0
    assert isinstance(manifest_entry.data_file, DataFile)

    data_file = manifest_entry.data_file

    assert data_file.content is DataFileContent.DATA
    assert (
        data_file.file_path
        == "/home/iceberg/warehouse/nyc/taxis_partitioned/data/VendorID=null/00000-633-d8a4223e-dc97-45a1-86e1-adaba6e8abd7-00001.parquet"
    )
    assert data_file.file_format == FileFormat.PARQUET
    assert repr(data_file.partition) == "Record[VendorID=1, tpep_pickup_datetime=1925]"
    assert data_file.record_count == 19513
    assert data_file.file_size_in_bytes == 388872
    assert data_file.column_sizes == {
        1: 53,
        2: 98153,
        3: 98693,
        4: 53,
        5: 53,
        6: 53,
        7: 17425,
        8: 18528,
        9: 53,
        10: 44788,
        11: 35571,
        12: 53,
        13: 1243,
        14: 2355,
        15: 12750,
        16: 4029,
        17: 110,
        18: 47194,
        19: 2948,
    }
    assert data_file.value_counts == {
        1: 19513,
        2: 19513,
        3: 19513,
        4: 19513,
        5: 19513,
        6: 19513,
        7: 19513,
        8: 19513,
        9: 19513,
        10: 19513,
        11: 19513,
        12: 19513,
        13: 19513,
        14: 19513,
        15: 19513,
        16: 19513,
        17: 19513,
        18: 19513,
        19: 19513,
    }
    assert data_file.null_value_counts == {
        1: 19513,
        2: 0,
        3: 0,
        4: 19513,
        5: 19513,
        6: 19513,
        7: 0,
        8: 0,
        9: 19513,
        10: 0,
        11: 0,
        12: 19513,
        13: 0,
        14: 0,
        15: 0,
        16: 0,
        17: 0,
        18: 0,
        19: 0,
    }
    assert data_file.nan_value_counts == {16: 0, 17: 0, 18: 0, 19: 0, 10: 0, 11: 0, 12: 0, 13: 0, 14: 0, 15: 0}
    assert data_file.lower_bounds == {
        2: b"2020-04-01 00:00",
        3: b"2020-04-01 00:12",
        7: b"\x03\x00\x00\x00",
        8: b"\x01\x00\x00\x00",
        10: b"\xf6(\\\x8f\xc2\x05S\xc0",
        11: b"\x00\x00\x00\x00\x00\x00\x00\x00",
        13: b"\x00\x00\x00\x00\x00\x00\x00\x00",
        14: b"\x00\x00\x00\x00\x00\x00\xe0\xbf",
        15: b")\\\x8f\xc2\xf5(\x08\xc0",
        16: b"\x00\x00\x00\x00\x00\x00\x00\x00",
        17: b"\x00\x00\x00\x00\x00\x00\x00\x00",
        18: b"\xf6(\\\x8f\xc2\xc5S\xc0",
        19: b"\x00\x00\x00\x00\x00\x00\x04\xc0",
    }
    assert data_file.upper_bounds == {
        2: b"2020-04-30 23:5:",
        3: b"2020-05-01 00:41",
        7: b"\t\x01\x00\x00",
        8: b"\t\x01\x00\x00",
        10: b"\xcd\xcc\xcc\xcc\xcc,_@",
        11: b"\x1f\x85\xebQ\\\xe2\xfe@",
        13: b"\x00\x00\x00\x00\x00\x00\x12@",
        14: b"\x00\x00\x00\x00\x00\x00\xe0?",
        15: b"q=\n\xd7\xa3\xf01@",
        16: b"\x00\x00\x00\x00\x00`B@",
        17: b"333333\xd3?",
        18: b"\x00\x00\x00\x00\x00\x18b@",
        19: b"\x00\x00\x00\x00\x00\x00\x04@",
    }
    assert data_file.key_metadata is None
    assert data_file.split_offsets == [4]
    assert data_file.equality_ids is None
    assert data_file.sort_order_id == 0


def test_read_manifest_list(generated_manifest_file_file_v1: str) -> None:
    input_file = PyArrowFileIO().new_input(generated_manifest_file_file_v1)
    manifest_list = list(read_manifest_list(input_file))[0]

    assert manifest_list.manifest_length == 7989
    assert manifest_list.partition_spec_id == 0
    assert manifest_list.added_snapshot_id == 9182715666859759686
    assert manifest_list.added_files_count == 3
    assert manifest_list.existing_files_count == 0
    assert manifest_list.deleted_files_count == 0

    assert isinstance(manifest_list.partitions, list)

    partitions_summary = manifest_list.partitions[0]
    assert isinstance(partitions_summary, PartitionFieldSummary)

    assert partitions_summary.contains_null is True
    assert partitions_summary.contains_nan is False
    assert partitions_summary.lower_bound == b"\x01\x00\x00\x00"
    assert partitions_summary.upper_bound == b"\x02\x00\x00\x00"

    assert manifest_list.added_rows_count == 237993
    assert manifest_list.existing_rows_count == 0
    assert manifest_list.deleted_rows_count == 0


def test_read_manifest_v1(generated_manifest_file_file_v1: str) -> None:
    io = load_file_io()

    snapshot = Snapshot(
        snapshot_id=25,
        parent_snapshot_id=19,
        timestamp_ms=1602638573590,
        manifest_list=generated_manifest_file_file_v1,
        summary=Summary(Operation.APPEND),
        schema_id=3,
    )
    manifest_list = snapshot.manifests(io)[0]

    assert manifest_list.manifest_length == 7989
    assert manifest_list.partition_spec_id == 0
    assert manifest_list.content == ManifestContent.DATA
    assert manifest_list.sequence_number == 0
    assert manifest_list.min_sequence_number == 0
    assert manifest_list.added_snapshot_id == 9182715666859759686
    assert manifest_list.added_files_count == 3
    assert manifest_list.existing_files_count == 0
    assert manifest_list.deleted_files_count == 0
    assert manifest_list.added_rows_count == 237993
    assert manifest_list.existing_rows_count == 0
    assert manifest_list.deleted_rows_count == 0
    assert manifest_list.key_metadata is None

    assert isinstance(manifest_list.partitions, list)

    partition = manifest_list.partitions[0]

    assert isinstance(partition, PartitionFieldSummary)

    assert partition.contains_null is True
    assert partition.contains_nan is False
    assert partition.lower_bound == b"\x01\x00\x00\x00"
    assert partition.upper_bound == b"\x02\x00\x00\x00"

    entries = manifest_list.fetch_manifest_entry(io)

    assert isinstance(entries, list)

    entry = entries[0]

    assert entry.data_sequence_number == 0
    assert entry.file_sequence_number == 0
    assert entry.snapshot_id == 8744736658442914487
    assert entry.status == ManifestEntryStatus.ADDED


def test_read_manifest_v2(generated_manifest_file_file_v2: str) -> None:
    io = load_file_io()

    snapshot = Snapshot(
        snapshot_id=25,
        parent_snapshot_id=19,
        timestamp_ms=1602638573590,
        manifest_list=generated_manifest_file_file_v2,
        summary=Summary(Operation.APPEND),
        schema_id=3,
    )
    manifest_list = snapshot.manifests(io)[0]

    assert manifest_list.manifest_length == 7989
    assert manifest_list.partition_spec_id == 0
    assert manifest_list.content == ManifestContent.DELETES
    assert manifest_list.sequence_number == 3
    assert manifest_list.min_sequence_number == 3
    assert manifest_list.added_snapshot_id == 9182715666859759686
    assert manifest_list.added_files_count == 3
    assert manifest_list.existing_files_count == 0
    assert manifest_list.deleted_files_count == 0
    assert manifest_list.added_rows_count == 237993
    assert manifest_list.existing_rows_count == 0
    assert manifest_list.deleted_rows_count == 0
    assert manifest_list.key_metadata is None

    assert isinstance(manifest_list.partitions, list)

    partition = manifest_list.partitions[0]

    assert isinstance(partition, PartitionFieldSummary)

    assert partition.contains_null is True
    assert partition.contains_nan is False
    assert partition.lower_bound == b"\x01\x00\x00\x00"
    assert partition.upper_bound == b"\x02\x00\x00\x00"

    entries = manifest_list.fetch_manifest_entry(io)

    assert isinstance(entries, list)

    entry = entries[0]

    assert entry.data_sequence_number == 3
    assert entry.file_sequence_number == 3
    assert entry.snapshot_id == 8744736658442914487
    assert entry.status == ManifestEntryStatus.ADDED


@pytest.mark.parametrize("format_version", [1, 2])
def test_write_manifest(
    generated_manifest_file_file_v1: str, generated_manifest_file_file_v2: str, format_version: TableVersion
) -> None:
    io = load_file_io()
    snapshot = Snapshot(
        snapshot_id=25,
        parent_snapshot_id=19,
        timestamp_ms=1602638573590,
        manifest_list=generated_manifest_file_file_v1 if format_version == 1 else generated_manifest_file_file_v2,
        summary=Summary(Operation.APPEND),
        schema_id=3,
    )
    demo_manifest_file = snapshot.manifests(io)[0]
    manifest_entries = demo_manifest_file.fetch_manifest_entry(io)
    test_schema = Schema(
        NestedField(1, "VendorID", IntegerType(), False), NestedField(2, "tpep_pickup_datetime", IntegerType(), False)
    )
    test_spec = PartitionSpec(
        PartitionField(source_id=1, field_id=1, transform=IdentityTransform(), name="VendorID"),
        PartitionField(source_id=2, field_id=2, transform=IdentityTransform(), name="tpep_pickup_datetime"),
        spec_id=demo_manifest_file.partition_spec_id,
    )
    with TemporaryDirectory() as tmpdir:
        tmp_avro_file = tmpdir + "/test_write_manifest.avro"
        output = io.new_output(tmp_avro_file)
        with write_manifest(
            format_version=format_version,
            spec=test_spec,
            schema=test_schema,
            output_file=output,
            snapshot_id=8744736658442914487,
        ) as writer:
            for entry in manifest_entries:
                writer.add_entry(entry)
            new_manifest = writer.to_manifest_file()
            with pytest.raises(RuntimeError):
                # It is already closed
                writer.add_entry(manifest_entries[0])

        expected_metadata = {
            "schema": test_schema.model_dump_json(),
            "partition-spec": test_spec.model_dump_json(),
            "partition-spec-id": str(test_spec.spec_id),
            "format-version": str(format_version),
        }
        _verify_metadata_with_fastavro(
            tmp_avro_file,
            expected_metadata,
        )
        new_manifest_entries = new_manifest.fetch_manifest_entry(io)

        manifest_entry = new_manifest_entries[0]

        assert manifest_entry.status == ManifestEntryStatus.ADDED
        assert manifest_entry.snapshot_id == 8744736658442914487
        assert manifest_entry.data_sequence_number == -1 if format_version == 1 else 3
        assert isinstance(manifest_entry.data_file, DataFile)

        data_file = manifest_entry.data_file

        assert data_file.content is DataFileContent.DATA
        assert (
            data_file.file_path
            == "/home/iceberg/warehouse/nyc/taxis_partitioned/data/VendorID=null/00000-633-d8a4223e-dc97-45a1-86e1-adaba6e8abd7-00001.parquet"
        )
        assert data_file.file_format == FileFormat.PARQUET
        assert data_file.partition == Record(VendorID=1, tpep_pickup_datetime=1925)
        assert data_file.record_count == 19513
        assert data_file.file_size_in_bytes == 388872
        assert data_file.column_sizes == {
            1: 53,
            2: 98153,
            3: 98693,
            4: 53,
            5: 53,
            6: 53,
            7: 17425,
            8: 18528,
            9: 53,
            10: 44788,
            11: 35571,
            12: 53,
            13: 1243,
            14: 2355,
            15: 12750,
            16: 4029,
            17: 110,
            18: 47194,
            19: 2948,
        }
        assert data_file.value_counts == {
            1: 19513,
            2: 19513,
            3: 19513,
            4: 19513,
            5: 19513,
            6: 19513,
            7: 19513,
            8: 19513,
            9: 19513,
            10: 19513,
            11: 19513,
            12: 19513,
            13: 19513,
            14: 19513,
            15: 19513,
            16: 19513,
            17: 19513,
            18: 19513,
            19: 19513,
        }
        assert data_file.null_value_counts == {
            1: 19513,
            2: 0,
            3: 0,
            4: 19513,
            5: 19513,
            6: 19513,
            7: 0,
            8: 0,
            9: 19513,
            10: 0,
            11: 0,
            12: 19513,
            13: 0,
            14: 0,
            15: 0,
            16: 0,
            17: 0,
            18: 0,
            19: 0,
        }
        assert data_file.nan_value_counts == {16: 0, 17: 0, 18: 0, 19: 0, 10: 0, 11: 0, 12: 0, 13: 0, 14: 0, 15: 0}
        assert data_file.lower_bounds == {
            2: b"2020-04-01 00:00",
            3: b"2020-04-01 00:12",
            7: b"\x03\x00\x00\x00",
            8: b"\x01\x00\x00\x00",
            10: b"\xf6(\\\x8f\xc2\x05S\xc0",
            11: b"\x00\x00\x00\x00\x00\x00\x00\x00",
            13: b"\x00\x00\x00\x00\x00\x00\x00\x00",
            14: b"\x00\x00\x00\x00\x00\x00\xe0\xbf",
            15: b")\\\x8f\xc2\xf5(\x08\xc0",
            16: b"\x00\x00\x00\x00\x00\x00\x00\x00",
            17: b"\x00\x00\x00\x00\x00\x00\x00\x00",
            18: b"\xf6(\\\x8f\xc2\xc5S\xc0",
            19: b"\x00\x00\x00\x00\x00\x00\x04\xc0",
        }
        assert data_file.upper_bounds == {
            2: b"2020-04-30 23:5:",
            3: b"2020-05-01 00:41",
            7: b"\t\x01\x00\x00",
            8: b"\t\x01\x00\x00",
            10: b"\xcd\xcc\xcc\xcc\xcc,_@",
            11: b"\x1f\x85\xebQ\\\xe2\xfe@",
            13: b"\x00\x00\x00\x00\x00\x00\x12@",
            14: b"\x00\x00\x00\x00\x00\x00\xe0?",
            15: b"q=\n\xd7\xa3\xf01@",
            16: b"\x00\x00\x00\x00\x00`B@",
            17: b"333333\xd3?",
            18: b"\x00\x00\x00\x00\x00\x18b@",
            19: b"\x00\x00\x00\x00\x00\x00\x04@",
        }
        assert data_file.key_metadata is None
        assert data_file.split_offsets == [4]
        assert data_file.equality_ids is None
        assert data_file.sort_order_id == 0


@pytest.mark.parametrize("format_version", [1, 2])
def test_write_manifest_list(
    generated_manifest_file_file_v1: str, generated_manifest_file_file_v2: str, format_version: TableVersion
) -> None:
    io = load_file_io()

    snapshot = Snapshot(
        snapshot_id=25,
        parent_snapshot_id=19,
        timestamp_ms=1602638573590,
        manifest_list=generated_manifest_file_file_v1 if format_version == 1 else generated_manifest_file_file_v2,
        summary=Summary(Operation.APPEND),
        schema_id=3,
    )

    demo_manifest_list = snapshot.manifests(io)
    with TemporaryDirectory() as tmp_dir:
        path = tmp_dir + "/manifest-list.avro"
        output = io.new_output(path)
        with write_manifest_list(
            format_version=format_version, output_file=output, snapshot_id=25, parent_snapshot_id=19, sequence_number=0
        ) as writer:
            writer.add_manifests(demo_manifest_list)
        new_manifest_list = list(read_manifest_list(io.new_input(path)))

        expected_metadata = {"snapshot-id": "25", "parent-snapshot-id": "19", "format-version": str(format_version)}
        if format_version == 2:
            expected_metadata["sequence-number"] = "0"
        _verify_metadata_with_fastavro(path, expected_metadata)

        manifest_file = new_manifest_list[0]

        assert manifest_file.manifest_length == 7989
        assert manifest_file.partition_spec_id == 0
        assert manifest_file.content == ManifestContent.DATA if format_version == 1 else ManifestContent.DELETES
        assert manifest_file.sequence_number == 0 if format_version == 1 else 3
        assert manifest_file.min_sequence_number == 0 if format_version == 1 else 3
        assert manifest_file.added_snapshot_id == 9182715666859759686
        assert manifest_file.added_files_count == 3
        assert manifest_file.existing_files_count == 0
        assert manifest_file.deleted_files_count == 0
        assert manifest_file.added_rows_count == 237993
        assert manifest_file.existing_rows_count == 0
        assert manifest_file.deleted_rows_count == 0
        assert manifest_file.key_metadata is None

        assert isinstance(manifest_file.partitions, list)

        partition = manifest_file.partitions[0]

        assert isinstance(partition, PartitionFieldSummary)

        assert partition.contains_null is True
        assert partition.contains_nan is False
        assert partition.lower_bound == b"\x01\x00\x00\x00"
        assert partition.upper_bound == b"\x02\x00\x00\x00"

        entries = manifest_file.fetch_manifest_entry(io)

        assert isinstance(entries, list)

        entry = entries[0]

        assert entry.data_sequence_number == 0 if format_version == 1 else 3
        assert entry.file_sequence_number == 0 if format_version == 1 else 3
        assert entry.snapshot_id == 8744736658442914487
        assert entry.status == ManifestEntryStatus.ADDED