"""Initial schema (Chapter 06): log_files, log_entries, request_stats_hourly/
daily, bot_hits, ip_registry, suspicious_events, blocklist_suggestions.
"""
from alembic import op
import sqlalchemy as sa

revision = "0001_initial_schema"
down_revision = None
branch_labels = None
depends_on = None


def upgrade():
    op.create_table(
        "log_files",
        sa.Column("id", sa.Integer, primary_key=True),
        sa.Column("filename", sa.String(255), nullable=False),
        sa.Column("server_type", sa.String(16), nullable=False),
        sa.Column("format_string", sa.Text, nullable=False),
        sa.Column("uploaded_at", sa.DateTime, nullable=False),
        sa.Column("status", sa.String(16), nullable=False, server_default="queued"),
        sa.Column("total_lines", sa.Integer, nullable=True),
        sa.Column("processed_lines", sa.Integer, nullable=False, server_default="0"),
        sa.Column("size_bytes", sa.BigInteger, nullable=False),
        sa.Column("checksum", sa.String(64), nullable=False),
        sa.Column("error_message", sa.Text, nullable=True),
    )
    op.create_index("ix_log_files_checksum", "log_files", ["checksum"])

    op.create_table(
        "log_entries",
        sa.Column("id", sa.Integer, primary_key=True),
        sa.Column("log_file_id", sa.Integer, sa.ForeignKey("log_files.id", ondelete="CASCADE"), nullable=False),
        sa.Column("timestamp", sa.DateTime, nullable=False),
        sa.Column("ip", sa.String(45), nullable=False),
        sa.Column("method", sa.String(10), nullable=False),
        sa.Column("path", sa.Text, nullable=False),
        sa.Column("status_code", sa.SmallInteger, nullable=False),
        sa.Column("bytes_sent", sa.Integer, nullable=False, server_default="0"),
        sa.Column("referrer", sa.Text, nullable=True),
        sa.Column("user_agent", sa.Text, nullable=True),
        sa.Column("is_bot", sa.Boolean, nullable=False, server_default=sa.false()),
        sa.Column("flagged", sa.Boolean, nullable=False, server_default=sa.false()),
    )
    op.create_index("ix_log_entries_file_ts", "log_entries", ["log_file_id", "timestamp"])
    op.create_index("ix_log_entries_ip", "log_entries", ["ip"])
    op.create_index("ix_log_entries_path", "log_entries", ["path"])
    op.create_index("ix_log_entries_timestamp", "log_entries", ["timestamp"])

    op.create_table(
        "request_stats_hourly",
        sa.Column("date_hour", sa.DateTime, primary_key=True),
        sa.Column("path", sa.String(2048), primary_key=True),
        sa.Column("status_code", sa.SmallInteger, primary_key=True),
        sa.Column("count", sa.Integer, nullable=False, server_default="0"),
        sa.Column("bytes_sent_sum", sa.BigInteger, nullable=False, server_default="0"),
    )

    op.create_table(
        "request_stats_daily",
        sa.Column("date", sa.Date, primary_key=True),
        sa.Column("count", sa.Integer, nullable=False, server_default="0"),
        sa.Column("unique_ips", sa.Integer, nullable=False, server_default="0"),
        sa.Column("bytes_sum", sa.BigInteger, nullable=False, server_default="0"),
        sa.Column("error_count", sa.Integer, nullable=False, server_default="0"),
    )

    op.create_table(
        "bot_hits",
        sa.Column("id", sa.Integer, primary_key=True),
        sa.Column("log_file_id", sa.Integer, sa.ForeignKey("log_files.id", ondelete="CASCADE"), nullable=False),
        sa.Column("timestamp", sa.DateTime, nullable=False),
        sa.Column("ip", sa.String(45), nullable=False),
        sa.Column("bot_name", sa.String(64), nullable=False),
        sa.Column("verified", sa.Boolean, nullable=False, server_default=sa.false()),
        sa.Column("path", sa.Text, nullable=False),
        sa.Column("status_code", sa.SmallInteger, nullable=False),
    )
    op.create_index("ix_bot_hits_timestamp", "bot_hits", ["timestamp"])
    op.create_index("ix_bot_hits_bot_name", "bot_hits", ["bot_name"])

    op.create_table(
        "ip_registry",
        sa.Column("ip", sa.String(45), primary_key=True),
        sa.Column("first_seen", sa.DateTime, nullable=False),
        sa.Column("last_seen", sa.DateTime, nullable=False),
        sa.Column("total_requests", sa.Integer, nullable=False, server_default="0"),
        sa.Column("reputation_score", sa.Integer, nullable=False, server_default="0"),
        sa.Column("is_flagged", sa.Boolean, nullable=False, server_default=sa.false()),
        sa.Column("last_verified_at", sa.DateTime, nullable=True),
    )

    op.create_table(
        "suspicious_events",
        sa.Column("id", sa.Integer, primary_key=True),
        sa.Column("log_file_id", sa.Integer, sa.ForeignKey("log_files.id", ondelete="CASCADE"), nullable=False),
        sa.Column("ip", sa.String(45), nullable=False),
        sa.Column("timestamp", sa.DateTime, nullable=False),
        sa.Column("path", sa.Text, nullable=False),
        sa.Column("rule_matched", sa.String(128), nullable=False),
        sa.Column("severity", sa.String(8), nullable=False),
    )
    op.create_index("ix_suspicious_events_timestamp", "suspicious_events", ["timestamp"])
    op.create_index("ix_suspicious_events_ip", "suspicious_events", ["ip"])
    op.create_index("ix_suspicious_events_severity", "suspicious_events", ["severity"])

    op.create_table(
        "blocklist_suggestions",
        sa.Column("id", sa.Integer, primary_key=True),
        sa.Column("ip", sa.String(45), nullable=False),
        sa.Column("reason", sa.String(255), nullable=False),
        sa.Column("created_at", sa.DateTime, nullable=False),
        sa.Column("exported", sa.Boolean, nullable=False, server_default=sa.false()),
    )
    op.create_index("ix_blocklist_suggestions_ip", "blocklist_suggestions", ["ip"])


def downgrade():
    op.drop_table("blocklist_suggestions")
    op.drop_table("suspicious_events")
    op.drop_table("ip_registry")
    op.drop_table("bot_hits")
    op.drop_table("request_stats_daily")
    op.drop_table("request_stats_hourly")
    op.drop_table("log_entries")
    op.drop_table("log_files")