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feat: add account-based subscription model with migrations

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Transition from team-based to account-based multi-tenancy (Free/Pro/Team).
Migrations 016-020 create accounts, subscriptions, plan_limits, and
account_invites tables, then migrate existing users and content FKs.

New models: Account, Subscription, PlanLimits, AccountInvite.
Updated models add account_id alongside existing team_id (coexistence
for safe two-PR deployment). Permissions and deps refactored for
account_role instead of is_team_admin.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
chihlasm
2026-02-07 02:38:47 -05:00
parent fb84bd8144
commit 4ccb93ee31
22 changed files with 933 additions and 47 deletions
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110
backend/alembic/versions/016_add_subscription_tables.py Normal file
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"""add accounts, subscriptions, plan_limits, and account_invites tables
Revision ID: 016
Revises: 015
Create Date: 2026-02-07
"""
from typing import Sequence, Union
from alembic import op
import sqlalchemy as sa
from sqlalchemy.dialects.postgresql import UUID, JSONB
# revision identifiers, used by Alembic.
revision: str = '016'
down_revision: Union[str, None] = '015'
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None
def upgrade() -> None:
# 1. accounts table
op.create_table(
'accounts',
sa.Column('id', UUID(as_uuid=True), server_default=sa.text('gen_random_uuid()'), nullable=False),
sa.Column('name', sa.String(255), nullable=False),
sa.Column('display_code', sa.String(8), nullable=False),
sa.Column('owner_id', UUID(as_uuid=True), nullable=True), # nullable until user created
sa.Column('stripe_customer_id', sa.String(255), 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.PrimaryKeyConstraint('id'),
sa.UniqueConstraint('display_code', name='uq_accounts_display_code'),
)
# 2. subscriptions table
op.create_table(
'subscriptions',
sa.Column('id', UUID(as_uuid=True), server_default=sa.text('gen_random_uuid()'), nullable=False),
sa.Column('account_id', UUID(as_uuid=True), nullable=False),
sa.Column('stripe_subscription_id', sa.String(255), nullable=True),
sa.Column('stripe_price_id', sa.String(255), nullable=True),
sa.Column('plan', sa.String(50), nullable=False, server_default='free'),
sa.Column('billing_interval', sa.String(20), nullable=True), # 'monthly' or 'annual'
sa.Column('status', sa.String(50), nullable=False, server_default='active'),
sa.Column('seat_limit', sa.Integer, nullable=True),
sa.Column('current_period_start', sa.DateTime(timezone=True), nullable=True),
sa.Column('current_period_end', sa.DateTime(timezone=True), nullable=True),
sa.Column('cancel_at_period_end', sa.Boolean, nullable=False, server_default='false'),
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.PrimaryKeyConstraint('id'),
sa.ForeignKeyConstraint(['account_id'], ['accounts.id'], ondelete='CASCADE'),
sa.UniqueConstraint('account_id', name='uq_subscriptions_account_id'),
)
op.create_index('ix_subscriptions_account_id', 'subscriptions', ['account_id'])
op.create_index('ix_subscriptions_plan', 'subscriptions', ['plan'])
# 3. plan_limits table (configuration — seeded with 3 rows)
op.create_table(
'plan_limits',
sa.Column('plan', sa.String(50), nullable=False),
sa.Column('max_trees', sa.Integer, nullable=True), # NULL = unlimited
sa.Column('max_sessions_per_month', sa.Integer, nullable=True),
sa.Column('max_users', sa.Integer, nullable=True),
sa.Column('custom_branding', sa.Boolean, nullable=False, server_default='false'),
sa.Column('priority_support', sa.Boolean, nullable=False, server_default='false'),
sa.Column('export_formats', JSONB, nullable=False, server_default='["markdown", "text"]'),
sa.PrimaryKeyConstraint('plan'),
)
# Seed plan_limits
op.execute("""
INSERT INTO plan_limits (plan, max_trees, max_sessions_per_month, max_users, custom_branding, priority_support, export_formats)
VALUES
('free', 3, 20, 1, false, false, '["markdown", "text"]'),
('pro', 25, 200, 1, false, true, '["markdown", "text", "html", "pdf"]'),
('team', NULL, NULL, NULL, true, true, '["markdown", "text", "html", "pdf"]')
""")
# 4. account_invites table
op.create_table(
'account_invites',
sa.Column('id', UUID(as_uuid=True), server_default=sa.text('gen_random_uuid()'), nullable=False),
sa.Column('account_id', UUID(as_uuid=True), nullable=False),
sa.Column('invited_by_id', UUID(as_uuid=True), nullable=False),
sa.Column('email', sa.String(255), nullable=False),
sa.Column('code', sa.String(32), nullable=False),
sa.Column('role', sa.String(50), nullable=False, server_default='engineer'),
sa.Column('accepted_by_id', UUID(as_uuid=True), nullable=True),
sa.Column('expires_at', sa.DateTime(timezone=True), nullable=True),
sa.Column('created_at', sa.DateTime(timezone=True), server_default=sa.text('NOW()'), nullable=False),
sa.Column('used_at', sa.DateTime(timezone=True), nullable=True),
sa.PrimaryKeyConstraint('id'),
sa.ForeignKeyConstraint(['account_id'], ['accounts.id'], ondelete='CASCADE'),
sa.ForeignKeyConstraint(['invited_by_id'], ['users.id']),
sa.ForeignKeyConstraint(['accepted_by_id'], ['users.id']),
sa.UniqueConstraint('code', name='uq_account_invites_code'),
sa.CheckConstraint("role IN ('engineer', 'viewer')", name='ck_account_invites_role'),
)
op.create_index('ix_account_invites_account_id', 'account_invites', ['account_id'])
op.create_index('ix_account_invites_email', 'account_invites', ['email'])
def downgrade() -> None:
op.drop_table('account_invites')
op.drop_table('plan_limits')
op.drop_table('subscriptions')
op.drop_table('accounts')