"""Migration: Create workspace tables.

Revision ID: 0072
Revises: 0071
"""

from alembic import op
import sqlalchemy as sa
from sqlalchemy.dialects.postgresql import UUID as PGUUID, JSONB

revision = "0072"
down_revision = "0071"
branch_labels = None
depends_on = None


def upgrade() -> None:
    # workspaces
    op.create_table(
        "workspaces",
        sa.Column("id", PGUUID(as_uuid=True), primary_key=True, server_default=sa.text("gen_random_uuid()")),
        sa.Column("tenant_id", PGUUID(as_uuid=True), sa.ForeignKey("tenants.id", ondelete="CASCADE"), nullable=False),
        sa.Column("name", sa.String(100), nullable=False),
        sa.Column("icon", sa.String(50), nullable=False, server_default="LayoutGrid"),
        sa.Column("description", sa.String(500), nullable=True),
        sa.Column("is_default", sa.Boolean, nullable=False, server_default=sa.text("false")),
        sa.Column("is_active", sa.Boolean, nullable=False, server_default=sa.text("true")),
        sa.Column("created_by", PGUUID(as_uuid=True), sa.ForeignKey("users.id", ondelete="SET NULL"), nullable=True),
        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.text("NOW()"), nullable=False),
        sa.Column("updated_at", sa.DateTime(timezone=True), server_default=sa.text("NOW()"), nullable=False),
        sa.UniqueConstraint("tenant_id", "name", name="uq_workspaces_tenant_name"),
    )
    op.create_index("ix_workspaces_tenant", "workspaces", ["tenant_id"])
    op.execute(
        "CREATE UNIQUE INDEX uq_workspace_default_per_tenant "
        "ON workspaces (tenant_id) WHERE is_default = true"
    )

    # workspace_modules
    op.create_table(
        "workspace_modules",
        sa.Column("id", PGUUID(as_uuid=True), primary_key=True, server_default=sa.text("gen_random_uuid()")),
        sa.Column("tenant_id", PGUUID(as_uuid=True), sa.ForeignKey("tenants.id", ondelete="CASCADE"), nullable=False),
        sa.Column("workspace_id", PGUUID(as_uuid=True), sa.ForeignKey("workspaces.id", ondelete="CASCADE"), nullable=False),
        sa.Column("module_key", sa.String(100), nullable=False),
        sa.Column("is_visible", sa.Boolean, nullable=False, server_default=sa.text("true")),
        sa.Column("menu_order", sa.Integer, nullable=False, server_default=sa.text("0")),
        sa.Column("config", JSONB, nullable=False, server_default=sa.text("'{}'::jsonb")),
        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.text("NOW()"), nullable=False),
        sa.Column("updated_at", sa.DateTime(timezone=True), server_default=sa.text("NOW()"), nullable=False),
        sa.UniqueConstraint("tenant_id", "workspace_id", "module_key", name="uq_wm_tenant_workspace_module"),
    )
    op.create_index("ix_wm_workspace", "workspace_modules", ["tenant_id", "workspace_id", "menu_order"])

    # workspace_users
    op.create_table(
        "workspace_users",
        sa.Column("id", PGUUID(as_uuid=True), primary_key=True, server_default=sa.text("gen_random_uuid()")),
        sa.Column("tenant_id", PGUUID(as_uuid=True), sa.ForeignKey("tenants.id", ondelete="CASCADE"), nullable=False),
        sa.Column("workspace_id", PGUUID(as_uuid=True), sa.ForeignKey("workspaces.id", ondelete="CASCADE"), nullable=False),
        sa.Column("user_id", PGUUID(as_uuid=True), sa.ForeignKey("users.id", ondelete="CASCADE"), nullable=False),
        sa.Column("role", sa.String(20), nullable=False, server_default="member"),
        sa.Column("is_default", sa.Boolean, nullable=False, server_default=sa.text("false")),
        sa.Column("assigned_by", PGUUID(as_uuid=True), sa.ForeignKey("users.id", ondelete="SET NULL"), nullable=True),
        sa.Column("assigned_at", sa.DateTime(timezone=True), server_default=sa.text("NOW()"), nullable=False),
        sa.UniqueConstraint("tenant_id", "workspace_id", "user_id", name="uq_wu_tenant_workspace_user"),
        sa.CheckConstraint("role IN ('member', 'manager')", name="ck_wu_role"),
    )
    op.create_index("ix_wu_workspace", "workspace_users", ["tenant_id", "workspace_id"])
    op.create_index("ix_wu_user", "workspace_users", ["tenant_id", "user_id"])

    # workspace_widgets
    op.create_table(
        "workspace_widgets",
        sa.Column("id", PGUUID(as_uuid=True), primary_key=True, server_default=sa.text("gen_random_uuid()")),
        sa.Column("tenant_id", PGUUID(as_uuid=True), sa.ForeignKey("tenants.id", ondelete="CASCADE"), nullable=False),
        sa.Column("workspace_id", PGUUID(as_uuid=True), sa.ForeignKey("workspaces.id", ondelete="CASCADE"), nullable=False),
        sa.Column("widget_key", sa.String(100), nullable=False),
        sa.Column("position_x", sa.Integer, nullable=False, server_default=sa.text("0")),
        sa.Column("position_y", sa.Integer, nullable=False, server_default=sa.text("0")),
        sa.Column("width", sa.Integer, nullable=False, server_default=sa.text("1")),
        sa.Column("height", sa.Integer, nullable=False, server_default=sa.text("1")),
        sa.Column("config", JSONB, nullable=False, server_default=sa.text("'{}'::jsonb")),
        sa.Column("created_at", sa.DateTime(timezone=True), server_default=sa.text("NOW()"), nullable=False),
        sa.Column("updated_at", sa.DateTime(timezone=True), server_default=sa.text("NOW()"), nullable=False),
    )
    op.create_index("ix_ww_workspace", "workspace_widgets", ["tenant_id", "workspace_id"])

    # RLS on all workspace tables
    for table in ["workspaces", "workspace_modules", "workspace_users", "workspace_widgets"]:
        op.execute(f"ALTER TABLE {table} ENABLE ROW LEVEL SECURITY")
        op.execute(
            f"CREATE POLICY {table}_tenant_isolation ON {table} "
            "FOR ALL "
            "USING (tenant_id = current_setting('app.current_tenant_id', true)::uuid) "
            "WITH CHECK (tenant_id = current_setting('app.current_tenant_id', true)::uuid)"
        )
        op.execute(f"GRANT SELECT, INSERT, UPDATE, DELETE ON {table} TO crm_api, crm_worker")


def downgrade() -> None:
    for table in ["workspace_widgets", "workspace_users", "workspace_modules", "workspaces"]:
        op.execute(f"DROP POLICY IF EXISTS {table}_tenant_isolation ON {table}")
        op.drop_table(table)