# ABOUTME: Tests for the interval projections migration (0004-interval-projections.sql).
# ABOUTME: Validates tables, constraints, and indexes for time-series interval tracking.

import apsw
import pytest


class TestMigrationCreatesAllTables:
    """Tests that migration creates all interval tables."""

    def test_animal_location_intervals_table_exists(self, migrated_db):
        """Migration creates animal_location_intervals table."""
        result = migrated_db.execute(
            "SELECT name FROM sqlite_master WHERE type='table' AND name='animal_location_intervals'"
        ).fetchone()
        assert result is not None
        assert result[0] == "animal_location_intervals"

    def test_animal_tag_intervals_table_exists(self, migrated_db):
        """Migration creates animal_tag_intervals table."""
        result = migrated_db.execute(
            "SELECT name FROM sqlite_master WHERE type='table' AND name='animal_tag_intervals'"
        ).fetchone()
        assert result is not None
        assert result[0] == "animal_tag_intervals"

    def test_animal_attr_intervals_table_exists(self, migrated_db):
        """Migration creates animal_attr_intervals table."""
        result = migrated_db.execute(
            "SELECT name FROM sqlite_master WHERE type='table' AND name='animal_attr_intervals'"
        ).fetchone()
        assert result is not None
        assert result[0] == "animal_attr_intervals"


class TestAnimalLocationIntervalsTable:
    """Tests for animal_location_intervals table schema and constraints."""

    def test_insert_valid_interval(self, migrated_db):
        """Can insert valid location interval data."""
        migrated_db.execute(
            """
            INSERT INTO animal_location_intervals (animal_id, location_id, start_utc, end_utc)
            VALUES (?, ?, ?, ?)
            """,
            (
                "01ARZ3NDEKTSV4RRFFQ69G5FAA",
                "01ARZ3NDEKTSV4RRFFQ69G5FAV",
                1704067200000,
                1704153600000,
            ),
        )
        result = migrated_db.execute(
            "SELECT animal_id, location_id, start_utc, end_utc FROM animal_location_intervals"
        ).fetchone()
        assert result == (
            "01ARZ3NDEKTSV4RRFFQ69G5FAA",
            "01ARZ3NDEKTSV4RRFFQ69G5FAV",
            1704067200000,
            1704153600000,
        )

    def test_null_end_utc_allowed(self, migrated_db):
        """Open interval with NULL end_utc is allowed."""
        migrated_db.execute(
            """
            INSERT INTO animal_location_intervals (animal_id, location_id, start_utc)
            VALUES (?, ?, ?)
            """,
            ("01ARZ3NDEKTSV4RRFFQ69G5FAA", "01ARZ3NDEKTSV4RRFFQ69G5FAV", 1704067200000),
        )
        result = migrated_db.execute("SELECT end_utc FROM animal_location_intervals").fetchone()
        assert result[0] is None

    def test_animal_id_length_check(self, migrated_db):
        """Animal ID must be exactly 26 characters."""
        with pytest.raises(apsw.ConstraintError):
            migrated_db.execute(
                """
                INSERT INTO animal_location_intervals (animal_id, location_id, start_utc)
                VALUES ('short', '01ARZ3NDEKTSV4RRFFQ69G5FAV', 1704067200000)
                """
            )

    def test_location_id_length_check(self, migrated_db):
        """Location ID must be exactly 26 characters."""
        with pytest.raises(apsw.ConstraintError):
            migrated_db.execute(
                """
                INSERT INTO animal_location_intervals (animal_id, location_id, start_utc)
                VALUES ('01ARZ3NDEKTSV4RRFFQ69G5FAA', 'short', 1704067200000)
                """
            )

    def test_end_utc_must_be_greater_than_start_utc(self, migrated_db):
        """end_utc must be greater than start_utc when not NULL."""
        with pytest.raises(apsw.ConstraintError):
            migrated_db.execute(
                """
                INSERT INTO animal_location_intervals (animal_id, location_id, start_utc, end_utc)
                VALUES ('01ARZ3NDEKTSV4RRFFQ69G5FAA', '01ARZ3NDEKTSV4RRFFQ69G5FAV',
                        1704067200000, 1704067200000)
                """
            )

    def test_end_utc_less_than_start_utc_rejected(self, migrated_db):
        """end_utc less than start_utc is rejected."""
        with pytest.raises(apsw.ConstraintError):
            migrated_db.execute(
                """
                INSERT INTO animal_location_intervals (animal_id, location_id, start_utc, end_utc)
                VALUES ('01ARZ3NDEKTSV4RRFFQ69G5FAA', '01ARZ3NDEKTSV4RRFFQ69G5FAV',
                        1704067200000, 1704000000000)
                """
            )

    def test_composite_primary_key(self, migrated_db):
        """Primary key is (animal_id, start_utc)."""
        # Insert first interval
        migrated_db.execute(
            """
            INSERT INTO animal_location_intervals (animal_id, location_id, start_utc)
            VALUES ('01ARZ3NDEKTSV4RRFFQ69G5FAA', '01ARZ3NDEKTSV4RRFFQ69G5FAV', 1704067200000)
            """
        )
        # Same animal, different start_utc should work
        migrated_db.execute(
            """
            INSERT INTO animal_location_intervals (animal_id, location_id, start_utc)
            VALUES ('01ARZ3NDEKTSV4RRFFQ69G5FAA', '01ARZ3NDEKTSV4RRFFQ69G5FAW', 1704153600000)
            """
        )
        # Same animal, same start_utc should fail
        with pytest.raises(apsw.ConstraintError):
            migrated_db.execute(
                """
                INSERT INTO animal_location_intervals (animal_id, location_id, start_utc)
                VALUES ('01ARZ3NDEKTSV4RRFFQ69G5FAA', '01ARZ3NDEKTSV4RRFFQ69G5FAX', 1704067200000)
                """
            )


class TestAnimalTagIntervalsTable:
    """Tests for animal_tag_intervals table schema and constraints."""

    def test_insert_valid_interval(self, migrated_db):
        """Can insert valid tag interval data."""
        migrated_db.execute(
            """
            INSERT INTO animal_tag_intervals (animal_id, tag, start_utc, end_utc)
            VALUES (?, ?, ?, ?)
            """,
            ("01ARZ3NDEKTSV4RRFFQ69G5FAA", "friendly", 1704067200000, 1704153600000),
        )
        result = migrated_db.execute(
            "SELECT animal_id, tag, start_utc, end_utc FROM animal_tag_intervals"
        ).fetchone()
        assert result == ("01ARZ3NDEKTSV4RRFFQ69G5FAA", "friendly", 1704067200000, 1704153600000)

    def test_null_end_utc_allowed(self, migrated_db):
        """Open interval with NULL end_utc is allowed."""
        migrated_db.execute(
            """
            INSERT INTO animal_tag_intervals (animal_id, tag, start_utc)
            VALUES (?, ?, ?)
            """,
            ("01ARZ3NDEKTSV4RRFFQ69G5FAA", "leader", 1704067200000),
        )
        result = migrated_db.execute("SELECT end_utc FROM animal_tag_intervals").fetchone()
        assert result[0] is None

    def test_animal_id_length_check(self, migrated_db):
        """Animal ID must be exactly 26 characters."""
        with pytest.raises(apsw.ConstraintError):
            migrated_db.execute(
                """
                INSERT INTO animal_tag_intervals (animal_id, tag, start_utc)
                VALUES ('short', 'friendly', 1704067200000)
                """
            )

    def test_end_utc_must_be_greater_than_start_utc(self, migrated_db):
        """end_utc must be greater than start_utc when not NULL."""
        with pytest.raises(apsw.ConstraintError):
            migrated_db.execute(
                """
                INSERT INTO animal_tag_intervals (animal_id, tag, start_utc, end_utc)
                VALUES ('01ARZ3NDEKTSV4RRFFQ69G5FAA', 'friendly', 1704067200000, 1704067200000)
                """
            )

    def test_composite_primary_key(self, migrated_db):
        """Primary key is (animal_id, tag, start_utc)."""
        # Insert first interval
        migrated_db.execute(
            """
            INSERT INTO animal_tag_intervals (animal_id, tag, start_utc)
            VALUES ('01ARZ3NDEKTSV4RRFFQ69G5FAA', 'friendly', 1704067200000)
            """
        )
        # Same animal, same tag, different start_utc should work
        migrated_db.execute(
            """
            INSERT INTO animal_tag_intervals (animal_id, tag, start_utc)
            VALUES ('01ARZ3NDEKTSV4RRFFQ69G5FAA', 'friendly', 1704153600000)
            """
        )
        # Same animal, different tag, same start_utc should work
        migrated_db.execute(
            """
            INSERT INTO animal_tag_intervals (animal_id, tag, start_utc)
            VALUES ('01ARZ3NDEKTSV4RRFFQ69G5FAA', 'leader', 1704067200000)
            """
        )
        # Same animal, same tag, same start_utc should fail
        with pytest.raises(apsw.ConstraintError):
            migrated_db.execute(
                """
                INSERT INTO animal_tag_intervals (animal_id, tag, start_utc)
                VALUES ('01ARZ3NDEKTSV4RRFFQ69G5FAA', 'friendly', 1704067200000)
                """
            )


class TestAnimalAttrIntervalsTable:
    """Tests for animal_attr_intervals table schema and constraints."""

    def test_insert_valid_interval(self, migrated_db):
        """Can insert valid attr interval data."""
        migrated_db.execute(
            """
            INSERT INTO animal_attr_intervals (animal_id, attr, value, start_utc, end_utc)
            VALUES (?, ?, ?, ?, ?)
            """,
            ("01ARZ3NDEKTSV4RRFFQ69G5FAA", "sex", "female", 1704067200000, 1704153600000),
        )
        result = migrated_db.execute(
            "SELECT animal_id, attr, value, start_utc, end_utc FROM animal_attr_intervals"
        ).fetchone()
        assert result == (
            "01ARZ3NDEKTSV4RRFFQ69G5FAA",
            "sex",
            "female",
            1704067200000,
            1704153600000,
        )

    def test_null_end_utc_allowed(self, migrated_db):
        """Open interval with NULL end_utc is allowed."""
        migrated_db.execute(
            """
            INSERT INTO animal_attr_intervals (animal_id, attr, value, start_utc)
            VALUES (?, ?, ?, ?)
            """,
            ("01ARZ3NDEKTSV4RRFFQ69G5FAA", "status", "alive", 1704067200000),
        )
        result = migrated_db.execute("SELECT end_utc FROM animal_attr_intervals").fetchone()
        assert result[0] is None

    def test_animal_id_length_check(self, migrated_db):
        """Animal ID must be exactly 26 characters."""
        with pytest.raises(apsw.ConstraintError):
            migrated_db.execute(
                """
                INSERT INTO animal_attr_intervals (animal_id, attr, value, start_utc)
                VALUES ('short', 'sex', 'female', 1704067200000)
                """
            )

    def test_attr_check_constraint_sex(self, migrated_db):
        """attr='sex' is allowed."""
        migrated_db.execute(
            """
            INSERT INTO animal_attr_intervals (animal_id, attr, value, start_utc)
            VALUES ('01ARZ3NDEKTSV4RRFFQ69G5FAA', 'sex', 'female', 1704067200000)
            """
        )
        count = migrated_db.execute("SELECT COUNT(*) FROM animal_attr_intervals").fetchone()[0]
        assert count == 1

    def test_attr_check_constraint_life_stage(self, migrated_db):
        """attr='life_stage' is allowed."""
        migrated_db.execute(
            """
            INSERT INTO animal_attr_intervals (animal_id, attr, value, start_utc)
            VALUES ('01ARZ3NDEKTSV4RRFFQ69G5FAA', 'life_stage', 'adult', 1704067200000)
            """
        )
        count = migrated_db.execute("SELECT COUNT(*) FROM animal_attr_intervals").fetchone()[0]
        assert count == 1

    def test_attr_check_constraint_repro_status(self, migrated_db):
        """attr='repro_status' is allowed."""
        migrated_db.execute(
            """
            INSERT INTO animal_attr_intervals (animal_id, attr, value, start_utc)
            VALUES ('01ARZ3NDEKTSV4RRFFQ69G5FAA', 'repro_status', 'intact', 1704067200000)
            """
        )
        count = migrated_db.execute("SELECT COUNT(*) FROM animal_attr_intervals").fetchone()[0]
        assert count == 1

    def test_attr_check_constraint_status(self, migrated_db):
        """attr='status' is allowed."""
        migrated_db.execute(
            """
            INSERT INTO animal_attr_intervals (animal_id, attr, value, start_utc)
            VALUES ('01ARZ3NDEKTSV4RRFFQ69G5FAA', 'status', 'alive', 1704067200000)
            """
        )
        count = migrated_db.execute("SELECT COUNT(*) FROM animal_attr_intervals").fetchone()[0]
        assert count == 1

    def test_attr_check_constraint_invalid_rejected(self, migrated_db):
        """Invalid attr value is rejected."""
        with pytest.raises(apsw.ConstraintError):
            migrated_db.execute(
                """
                INSERT INTO animal_attr_intervals (animal_id, attr, value, start_utc)
                VALUES ('01ARZ3NDEKTSV4RRFFQ69G5FAA', 'invalid_attr', 'value', 1704067200000)
                """
            )

    def test_end_utc_must_be_greater_than_start_utc(self, migrated_db):
        """end_utc must be greater than start_utc when not NULL."""
        with pytest.raises(apsw.ConstraintError):
            migrated_db.execute(
                """
                INSERT INTO animal_attr_intervals (animal_id, attr, value, start_utc, end_utc)
                VALUES ('01ARZ3NDEKTSV4RRFFQ69G5FAA', 'sex', 'female', 1704067200000, 1704067200000)
                """
            )

    def test_composite_primary_key(self, migrated_db):
        """Primary key is (animal_id, attr, start_utc)."""
        # Insert first interval
        migrated_db.execute(
            """
            INSERT INTO animal_attr_intervals (animal_id, attr, value, start_utc)
            VALUES ('01ARZ3NDEKTSV4RRFFQ69G5FAA', 'sex', 'female', 1704067200000)
            """
        )
        # Same animal, same attr, different start_utc should work
        migrated_db.execute(
            """
            INSERT INTO animal_attr_intervals (animal_id, attr, value, start_utc)
            VALUES ('01ARZ3NDEKTSV4RRFFQ69G5FAA', 'sex', 'male', 1704153600000)
            """
        )
        # Same animal, different attr, same start_utc should work
        migrated_db.execute(
            """
            INSERT INTO animal_attr_intervals (animal_id, attr, value, start_utc)
            VALUES ('01ARZ3NDEKTSV4RRFFQ69G5FAA', 'status', 'alive', 1704067200000)
            """
        )
        # Same animal, same attr, same start_utc should fail
        with pytest.raises(apsw.ConstraintError):
            migrated_db.execute(
                """
                INSERT INTO animal_attr_intervals (animal_id, attr, value, start_utc)
                VALUES ('01ARZ3NDEKTSV4RRFFQ69G5FAA', 'sex', 'unknown', 1704067200000)
                """
            )


class TestIndexes:
    """Tests that indexes are created correctly."""

    def test_location_intervals_indexes_exist(self, migrated_db):
        """animal_location_intervals table has required indexes."""
        indexes = migrated_db.execute(
            "SELECT name FROM sqlite_master WHERE type='index' AND tbl_name='animal_location_intervals'"
        ).fetchall()
        index_names = {row[0] for row in indexes}

        assert "idx_ali_loc_time" in index_names
        assert "idx_ali_animal_time" in index_names

    def test_tag_intervals_indexes_exist(self, migrated_db):
        """animal_tag_intervals table has required indexes."""
        indexes = migrated_db.execute(
            "SELECT name FROM sqlite_master WHERE type='index' AND tbl_name='animal_tag_intervals'"
        ).fetchall()
        index_names = {row[0] for row in indexes}

        assert "idx_ati_tag_time" in index_names

    def test_attr_intervals_indexes_exist(self, migrated_db):
        """animal_attr_intervals table has required indexes."""
        indexes = migrated_db.execute(
            "SELECT name FROM sqlite_master WHERE type='index' AND tbl_name='animal_attr_intervals'"
        ).fetchall()
        index_names = {row[0] for row in indexes}

        assert "idx_aai_attr_time" in index_names