"""Initial Hub schema with clients, instances, and usage samples.

Revision ID: 001
Revises:
Create Date: 2024-12-09

"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa


# revision identifiers, used by Alembic.
revision: str = "001"
down_revision: Union[str, None] = None
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    # Create clients table
    op.create_table(
        "clients",
        sa.Column("id", sa.UUID(), nullable=False),
        sa.Column("name", sa.String(length=255), nullable=False),
        sa.Column("contact_email", sa.String(length=255), nullable=True),
        sa.Column("billing_plan", sa.String(length=50), nullable=False, server_default="free"),
        sa.Column("status", sa.String(length=50), nullable=False, server_default="active"),
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            nullable=False,
            server_default=sa.text("now()"),
        ),
        sa.Column(
            "updated_at",
            sa.DateTime(timezone=True),
            nullable=False,
            server_default=sa.text("now()"),
        ),
        sa.PrimaryKeyConstraint("id"),
    )

    # Create instances table
    op.create_table(
        "instances",
        sa.Column("id", sa.UUID(), nullable=False),
        sa.Column("client_id", sa.UUID(), nullable=False),
        sa.Column("instance_id", sa.String(length=255), nullable=False),
        # Licensing
        sa.Column("license_key_hash", sa.String(length=64), nullable=False),
        sa.Column("license_key_prefix", sa.String(length=12), nullable=False),
        sa.Column("license_status", sa.String(length=50), nullable=False, server_default="active"),
        sa.Column("license_issued_at", sa.DateTime(timezone=True), nullable=False),
        sa.Column("license_expires_at", sa.DateTime(timezone=True), nullable=True),
        # Activation state
        sa.Column("activated_at", sa.DateTime(timezone=True), nullable=True),
        sa.Column("last_activation_at", sa.DateTime(timezone=True), nullable=True),
        sa.Column("activation_count", sa.Integer(), nullable=False, server_default="0"),
        # Telemetry
        sa.Column("hub_api_key_hash", sa.String(length=64), nullable=True),
        # Metadata
        sa.Column("region", sa.String(length=50), nullable=True),
        sa.Column("version", sa.String(length=50), nullable=True),
        sa.Column("last_seen_at", sa.DateTime(timezone=True), nullable=True),
        sa.Column("status", sa.String(length=50), nullable=False, server_default="pending"),
        # Timestamps
        sa.Column(
            "created_at",
            sa.DateTime(timezone=True),
            nullable=False,
            server_default=sa.text("now()"),
        ),
        sa.Column(
            "updated_at",
            sa.DateTime(timezone=True),
            nullable=False,
            server_default=sa.text("now()"),
        ),
        sa.ForeignKeyConstraint(
            ["client_id"],
            ["clients.id"],
            ondelete="CASCADE",
        ),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index(
        op.f("ix_instances_instance_id"),
        "instances",
        ["instance_id"],
        unique=True,
    )

    # Create usage_samples table
    op.create_table(
        "usage_samples",
        sa.Column("id", sa.UUID(), nullable=False),
        sa.Column("instance_id", sa.UUID(), nullable=False),
        # Time window
        sa.Column("window_start", sa.DateTime(timezone=True), nullable=False),
        sa.Column("window_end", sa.DateTime(timezone=True), nullable=False),
        sa.Column("window_type", sa.String(length=20), nullable=False),
        # Tool (ONLY name)
        sa.Column("tool_name", sa.String(length=255), nullable=False),
        # Counts
        sa.Column("call_count", sa.Integer(), nullable=False, server_default="0"),
        sa.Column("success_count", sa.Integer(), nullable=False, server_default="0"),
        sa.Column("error_count", sa.Integer(), nullable=False, server_default="0"),
        sa.Column("rate_limited_count", sa.Integer(), nullable=False, server_default="0"),
        # Duration stats
        sa.Column("total_duration_ms", sa.Integer(), nullable=False, server_default="0"),
        sa.Column("min_duration_ms", sa.Integer(), nullable=False, server_default="0"),
        sa.Column("max_duration_ms", sa.Integer(), nullable=False, server_default="0"),
        sa.ForeignKeyConstraint(
            ["instance_id"],
            ["instances.id"],
            ondelete="CASCADE",
        ),
        sa.PrimaryKeyConstraint("id"),
    )
    op.create_index(
        op.f("ix_usage_samples_instance_id"),
        "usage_samples",
        ["instance_id"],
        unique=False,
    )
    op.create_index(
        op.f("ix_usage_samples_tool_name"),
        "usage_samples",
        ["tool_name"],
        unique=False,
    )


def downgrade() -> None:
    op.drop_index(op.f("ix_usage_samples_tool_name"), table_name="usage_samples")
    op.drop_index(op.f("ix_usage_samples_instance_id"), table_name="usage_samples")
    op.drop_table("usage_samples")
    op.drop_index(op.f("ix_instances_instance_id"), table_name="instances")
    op.drop_table("instances")
    op.drop_table("clients")