"""add reflection_message and profile_revision (Phase 2 AI coach loop)

Revision ID: 004
Revises: 003
Create Date: 2026-06-16

Phase 2: the AI-coach reflection loop stores its dialogue in reflection_message,
and every change to a profile's prose (initial extraction, reflection-applied
revision, or manual edit) is snapshotted in profile_revision.
"""
from typing import Sequence, Union

import sqlalchemy as sa
from alembic import op

revision: str = "004"
down_revision: Union[str, None] = "003"
branch_labels: Union[str, Sequence[str], None] = None
depends_on: Union[str, Sequence[str], None] = None


def upgrade() -> None:
    op.create_table(
        "reflection_message",
        sa.Column("id", sa.String(), primary_key=True),
        sa.Column(
            "profile_id",
            sa.String(),
            sa.ForeignKey("discovery_profile.id"),
            nullable=False,
        ),
        sa.Column(
            "user_id",
            sa.String(),
            sa.ForeignKey("users.id"),
            nullable=False,
        ),
        sa.Column("role", sa.String(), nullable=False),
        sa.Column("content", sa.Text(), nullable=False),
        sa.Column("sequence", sa.Integer(), nullable=False),
        sa.Column("created_at", sa.DateTime(), nullable=False),
    )
    op.create_index(
        "ix_reflection_message_profile_id",
        "reflection_message",
        ["profile_id"],
    )
    op.create_index(
        "ix_reflection_message_user_id", "reflection_message", ["user_id"]
    )

    op.create_table(
        "profile_revision",
        sa.Column("id", sa.String(), primary_key=True),
        sa.Column(
            "profile_id",
            sa.String(),
            sa.ForeignKey("discovery_profile.id"),
            nullable=False,
        ),
        sa.Column(
            "user_id",
            sa.String(),
            sa.ForeignKey("users.id"),
            nullable=False,
        ),
        sa.Column("source", sa.String(), nullable=False),
        sa.Column("fields_json", sa.Text(), nullable=False),
        sa.Column("note", sa.Text(), nullable=True),
        sa.Column("created_at", sa.DateTime(), nullable=False),
    )
    op.create_index(
        "ix_profile_revision_profile_id", "profile_revision", ["profile_id"]
    )
    op.create_index(
        "ix_profile_revision_user_id", "profile_revision", ["user_id"]
    )


def downgrade() -> None:
    op.drop_index(
        "ix_profile_revision_user_id", table_name="profile_revision"
    )
    op.drop_index(
        "ix_profile_revision_profile_id", table_name="profile_revision"
    )
    op.drop_table("profile_revision")

    op.drop_index(
        "ix_reflection_message_user_id", table_name="reflection_message"
    )
    op.drop_index(
        "ix_reflection_message_profile_id", table_name="reflection_message"
    )
    op.drop_table("reflection_message")