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// distributed with this work for additional information
// 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
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

use apache_avro::{
    from_avro_datum_schemata, to_avro_datum_schemata, types::Value, Codec, Reader, Schema, Writer,
};
use apache_avro_test_helper::{init, TestResult};

static SCHEMA_A_STR: &str = r#"{
        "name": "A",
        "type": "record",
        "fields": [
            {"name": "field_a", "type": "float"}
        ]
    }"#;

static SCHEMA_B_STR: &str = r#"{
        "name": "B",
        "type": "record",
        "fields": [
            {"name": "field_b", "type": "A"}
        ]
    }"#;

#[test]
fn test_avro_3683_multiple_schemata_to_from_avro_datum() -> TestResult {
    init();

    let record: Value = Value::Record(vec![(
        String::from("field_b"),
        Value::Record(vec![(String::from("field_a"), Value::Float(1.0))]),
    )]);

    let schemata: Vec<Schema> = Schema::parse_list(&[SCHEMA_A_STR, SCHEMA_B_STR])?;
    let schemata: Vec<&Schema> = schemata.iter().collect();

    // this is the Schema we want to use for write/read
    let schema_b = schemata[1];
    let expected: Vec<u8> = vec![0, 0, 128, 63];
    let actual = to_avro_datum_schemata(schema_b, schemata.clone(), record.clone())?;
    assert_eq!(actual, expected);

    let value = from_avro_datum_schemata(schema_b, schemata, &mut actual.as_slice(), None)?;
    assert_eq!(value, record);

    Ok(())
}

#[test]
fn test_avro_3683_multiple_schemata_writer_reader() -> TestResult {
    init();

    let record: Value = Value::Record(vec![(
        String::from("field_b"),
        Value::Record(vec![(String::from("field_a"), Value::Float(1.0))]),
    )]);

    let schemata: Vec<Schema> = Schema::parse_list(&[SCHEMA_A_STR, SCHEMA_B_STR])?;
    let schemata: Vec<&Schema> = schemata.iter().collect();

    // this is the Schema we want to use for write/read
    let schema_b = schemata[1];
    let mut output: Vec<u8> = Vec::new();

    let mut writer = Writer::with_schemata(schema_b, schemata.clone(), &mut output, Codec::Null);
    writer.append(record.clone())?;
    writer.flush()?;

    let reader = Reader::with_schemata(schema_b, schemata, output.as_slice())?;
    let value = reader.into_iter().next().unwrap().unwrap();
    assert_eq!(value, record);

    Ok(())
}