"""
Enable the PostgreSQL extensions the search fallback relies on.

``pg_trgm`` powers ``TrigramSimilarity`` (typo tolerant name matching) and the
GIN trigram index below makes ``ILIKE '%term%'`` on skill names fast enough for
the type-ahead endpoint.
"""

from django.contrib.postgres.operations import TrigramExtension, UnaccentExtension
from django.db import migrations


class Migration(migrations.Migration):
    dependencies = [("profiles", "0001_initial")]

    operations = [
        TrigramExtension(),
        UnaccentExtension(),
        migrations.RunSQL(
            sql=(
                "CREATE INDEX IF NOT EXISTS profile_full_name_trgm "
                "ON profiles_profile USING gin (full_name gin_trgm_ops);"
            ),
            reverse_sql="DROP INDEX IF EXISTS profile_full_name_trgm;",
        ),
        migrations.RunSQL(
            sql=(
                "CREATE INDEX IF NOT EXISTS skill_name_trgm "
                "ON profiles_skill USING gin (name gin_trgm_ops);"
            ),
            reverse_sql="DROP INDEX IF EXISTS skill_name_trgm;",
        ),
    ]