"""add task_mapping (Phase 4 task-to-goal integration)

Revision ID: 006
Revises: 005
Create Date: 2026-06-16

Phase 4: the ImpactFlow core time-tracker posts each logged unit of work here,
mapped to the profile foundation it builds toward. The work-pattern aggregation
rolls these up to feed the coaching reminder engine and the goal dashboard.
"""
from typing import Sequence, Union

import sqlalchemy as sa
from alembic import op

revision: str = "006"
down_revision: Union[str, None] = "005"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.create_table(
        "task_mapping",
        sa.Column("id", sa.String(), primary_key=True),
        sa.Column(
            "user_id",
            sa.String(),
            sa.ForeignKey("users.id"),
            nullable=False,
        ),
        sa.Column("external_task_id", sa.String(), nullable=False),
        sa.Column("task_label", sa.String(), nullable=True),
        sa.Column("foundation", sa.String(), nullable=False),
        sa.Column("minutes", sa.Integer(), nullable=False, server_default="0"),
        sa.Column("occurred_at", sa.DateTime(), nullable=False),
        sa.Column("created_at", sa.DateTime(), nullable=False),
    )
    op.create_index("ix_task_mapping_user_id", "task_mapping", ["user_id"])
    op.create_index(
        "ix_task_mapping_foundation", "task_mapping", ["foundation"]
    )
    op.create_index(
        "ix_task_mapping_occurred_at", "task_mapping", ["occurred_at"]
    )


def downgrade() -> None:
    op.drop_index("ix_task_mapping_occurred_at", table_name="task_mapping")
    op.drop_index("ix_task_mapping_foundation", table_name="task_mapping")
    op.drop_index("ix_task_mapping_user_id", table_name="task_mapping")
    op.drop_table("task_mapping")