"""initial schema

Revision ID: 062ccae5457b
Revises:
Create Date: 2026-02-24 07:31:10.140166

"""
from typing import Sequence, Union

from alembic import op
import sqlalchemy as sa
from sqlalchemy.dialects import mysql


# revision identifiers, used by Alembic.
revision: str = "062ccae5457b"
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:
    # ---- 1. users (no FK dependencies) ----
    op.create_table(
        "users",
        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
        sa.Column("username", sa.String(100), nullable=False),
        sa.Column("email", sa.String(255), nullable=False),
        sa.Column("password_hash", sa.String(255), nullable=False),
        sa.Column(
            "role", sa.String(20), nullable=False, server_default="dak_mitarbeiter"
        ),
        sa.Column("mfa_secret", sa.String(255), nullable=True),
        sa.Column("mfa_enabled", sa.Boolean(), nullable=False, server_default="0"),
        sa.Column("is_active", sa.Boolean(), nullable=False, server_default="1"),
        sa.Column(
            "must_change_password", sa.Boolean(), nullable=False, server_default="0"
        ),
        sa.Column("last_login", sa.DateTime(), nullable=True),
        sa.Column(
            "failed_login_attempts", sa.Integer(), nullable=False, server_default="0"
        ),
        sa.Column("locked_until", sa.DateTime(), nullable=True),
        sa.Column(
            "created_at",
            sa.DateTime(),
            nullable=False,
            server_default=sa.func.now(),
        ),
        sa.Column(
            "updated_at",
            sa.DateTime(),
            nullable=False,
            server_default=sa.func.now(),
        ),
        sa.PrimaryKeyConstraint("id"),
        sa.UniqueConstraint("username", name="uk_username"),
        sa.UniqueConstraint("email", name="uk_email"),
        sa.CheckConstraint(
            "role IN ('admin', 'dak_mitarbeiter')", name="chk_role"
        ),
    )

    # ---- 2. refresh_tokens (FK -> users) ----
    op.create_table(
        "refresh_tokens",
        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
        sa.Column("user_id", sa.Integer(), nullable=False),
        sa.Column("token_hash", sa.String(255), nullable=False),
        sa.Column("expires_at", sa.DateTime(), nullable=False),
        sa.Column("revoked", sa.Boolean(), nullable=False, server_default="0"),
        sa.Column(
            "created_at",
            sa.DateTime(),
            nullable=False,
            server_default=sa.func.now(),
        ),
        sa.PrimaryKeyConstraint("id"),
        sa.ForeignKeyConstraint(
            ["user_id"], ["users.id"], ondelete="CASCADE"
        ),
        sa.Index("idx_user", "user_id"),
        sa.Index("idx_token", "token_hash"),
    )

    # ---- 3. invitation_links (FK -> users) ----
    op.create_table(
        "invitation_links",
        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
        sa.Column("token", sa.String(255), nullable=False),
        sa.Column("email", sa.String(255), nullable=True),
        sa.Column(
            "role", sa.String(20), nullable=False, server_default="dak_mitarbeiter"
        ),
        sa.Column("created_by", sa.Integer(), nullable=True),
        sa.Column("expires_at", sa.DateTime(), nullable=False),
        sa.Column("used_at", sa.DateTime(), nullable=True),
        sa.Column("used_by", sa.Integer(), nullable=True),
        sa.Column("is_active", sa.Boolean(), nullable=False, server_default="1"),
        sa.Column(
            "created_at",
            sa.DateTime(),
            nullable=False,
            server_default=sa.func.now(),
        ),
        sa.PrimaryKeyConstraint("id"),
        sa.ForeignKeyConstraint(["created_by"], ["users.id"]),
        sa.ForeignKeyConstraint(["used_by"], ["users.id"]),
        sa.UniqueConstraint("token", name="uk_token"),
    )

    # ---- 4. allowed_domains (no FK) ----
    op.create_table(
        "allowed_domains",
        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
        sa.Column("domain", sa.String(255), nullable=False),
        sa.Column(
            "role", sa.String(20), nullable=False, server_default="dak_mitarbeiter"
        ),
        sa.Column("is_active", sa.Boolean(), nullable=False, server_default="1"),
        sa.Column(
            "created_at",
            sa.DateTime(),
            nullable=False,
            server_default=sa.func.now(),
        ),
        sa.PrimaryKeyConstraint("id"),
        sa.UniqueConstraint("domain", name="uk_domain"),
    )

    # ---- 5. cases (FK -> users for updated_by, icd_entered_by, coding_completed_by) ----
    op.create_table(
        "cases",
        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
        sa.Column("fall_id", sa.String(100), nullable=True),
        sa.Column("crm_ticket_id", sa.String(20), nullable=True),
        sa.Column("jahr", sa.SmallInteger(), nullable=False),
        sa.Column("kw", sa.SmallInteger(), nullable=False),
        sa.Column("datum", sa.Date(), nullable=False),
        sa.Column("anrede", sa.String(20), nullable=True),
        sa.Column("vorname", sa.String(100), nullable=True),
        sa.Column("nachname", sa.String(100), nullable=False),
        sa.Column("geburtsdatum", sa.Date(), nullable=True),
        sa.Column("kvnr", sa.String(20), nullable=True),
        sa.Column(
            "versicherung", sa.String(50), nullable=False, server_default="DAK"
        ),
        sa.Column("icd", sa.Text(), nullable=True),
        sa.Column("fallgruppe", sa.String(20), nullable=False),
        sa.Column("strasse", sa.String(255), nullable=True),
        sa.Column("plz", sa.String(10), nullable=True),
        sa.Column("ort", sa.String(100), nullable=True),
        sa.Column("email", sa.String(255), nullable=True),
        sa.Column("ansprechpartner", sa.String(200), nullable=True),
        sa.Column("telefonnummer", sa.String(50), nullable=True),
        sa.Column("mobiltelefon", sa.String(50), nullable=True),
        sa.Column("email2", sa.String(255), nullable=True),
        sa.Column("telefon2", sa.String(50), nullable=True),
        sa.Column("unterlagen", sa.Boolean(), nullable=False, server_default="0"),
        sa.Column("unterlagen_verschickt", sa.Date(), nullable=True),
        sa.Column("erhalten", sa.Boolean(), nullable=True),
        sa.Column("unterlagen_erhalten", sa.Date(), nullable=True),
        sa.Column("unterlagen_an_gutachter", sa.Date(), nullable=True),
        sa.Column("gutachten", sa.Boolean(), nullable=False, server_default="0"),
        sa.Column("gutachter", sa.String(100), nullable=True),
        sa.Column("gutachten_erstellt", sa.Date(), nullable=True),
        sa.Column("gutachten_versendet", sa.Date(), nullable=True),
        sa.Column(
            "schweigepflicht", sa.Boolean(), nullable=False, server_default="0"
        ),
        sa.Column("ablehnung", sa.Boolean(), nullable=False, server_default="0"),
        sa.Column("abbruch", sa.Boolean(), nullable=False, server_default="0"),
        sa.Column("abbruch_datum", sa.Date(), nullable=True),
        sa.Column("gutachten_typ", sa.String(20), nullable=True),
        sa.Column("therapieaenderung", sa.String(5), nullable=True),
        sa.Column(
            "ta_diagnosekorrektur",
            sa.Boolean(),
            nullable=False,
            server_default="0",
        ),
        sa.Column(
            "ta_unterversorgung", sa.Boolean(), nullable=False, server_default="0"
        ),
        sa.Column(
            "ta_uebertherapie", sa.Boolean(), nullable=False, server_default="0"
        ),
        sa.Column("kurzbeschreibung", sa.Text(), nullable=True),
        sa.Column("fragestellung", sa.Text(), nullable=True),
        sa.Column("kommentar", sa.Text(), nullable=True),
        sa.Column("sonstiges", sa.Text(), nullable=True),
        sa.Column("abgerechnet", sa.Boolean(), nullable=False, server_default="0"),
        sa.Column("abrechnung_datum", sa.Date(), nullable=True),
        sa.Column("import_source", sa.String(255), nullable=True),
        sa.Column(
            "imported_at",
            sa.DateTime(),
            nullable=False,
            server_default=sa.func.now(),
        ),
        sa.Column(
            "updated_at",
            sa.DateTime(),
            nullable=False,
            server_default=sa.func.now(),
        ),
        sa.Column("updated_by", sa.Integer(), nullable=True),
        sa.Column("icd_entered_by", sa.Integer(), nullable=True),
        sa.Column("icd_entered_at", sa.DateTime(), nullable=True),
        sa.Column("coding_completed_by", sa.Integer(), nullable=True),
        sa.Column("coding_completed_at", sa.DateTime(), nullable=True),
        sa.PrimaryKeyConstraint("id"),
        sa.ForeignKeyConstraint(["updated_by"], ["users.id"]),
        sa.ForeignKeyConstraint(["icd_entered_by"], ["users.id"]),
        sa.ForeignKeyConstraint(["coding_completed_by"], ["users.id"]),
        sa.UniqueConstraint("fall_id", name="uk_fall_id"),
        sa.Index("idx_jahr_kw", "jahr", "kw"),
        sa.Index("idx_kvnr", "kvnr"),
        sa.Index("idx_fallgruppe", "fallgruppe"),
        sa.Index("idx_datum", "datum"),
        sa.Index("idx_nachname_vorname", "nachname", "vorname"),
        sa.Index("idx_pending_coding", "gutachten", "gutachten_typ"),
        sa.CheckConstraint(
            "fallgruppe IN ('onko','kardio','intensiv','galle','sd')",
            name="chk_fallgruppe",
        ),
        sa.CheckConstraint(
            "gutachten_typ IS NULL OR gutachten_typ IN "
            "('Bestätigung','Alternative')",
            name="chk_gutachten_typ",
        ),
        sa.CheckConstraint(
            "therapieaenderung IS NULL OR therapieaenderung IN ('Ja','Nein')",
            name="chk_ta",
        ),
    )

    # The idx_pending_icd index uses a prefix length on the `icd` TEXT column.
    # SQLAlchemy / Alembic cannot express mysql_length via sa.Index in create_table,
    # so we create it with raw SQL.
    op.execute(
        "CREATE INDEX idx_pending_icd ON cases (jahr, kw, fallgruppe, icd(20))"
    )

    # ---- 6. case_icd_codes (FK -> cases) ----
    op.create_table(
        "case_icd_codes",
        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
        sa.Column("case_id", sa.Integer(), nullable=False),
        sa.Column("icd_code", sa.String(20), nullable=False),
        sa.Column("icd_hauptgruppe", sa.String(10), nullable=True),
        sa.Column(
            "created_at",
            sa.DateTime(),
            nullable=False,
            server_default=sa.func.now(),
        ),
        sa.PrimaryKeyConstraint("id"),
        sa.ForeignKeyConstraint(
            ["case_id"], ["cases.id"], ondelete="CASCADE"
        ),
        sa.Index("idx_case", "case_id"),
        sa.Index("idx_code", "icd_code"),
        sa.Index("idx_haupt", "icd_hauptgruppe"),
    )

    # ---- 7. weekly_reports (FK -> users) ----
    op.create_table(
        "weekly_reports",
        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
        sa.Column("jahr", sa.SmallInteger(), nullable=False),
        sa.Column("kw", sa.SmallInteger(), nullable=False),
        sa.Column("report_date", sa.Date(), nullable=False),
        sa.Column("report_file_path", sa.String(500), nullable=True),
        sa.Column("report_data", mysql.JSON(), nullable=True),
        sa.Column("generated_by", sa.Integer(), nullable=True),
        sa.Column(
            "generated_at",
            sa.DateTime(),
            nullable=False,
            server_default=sa.func.now(),
        ),
        sa.PrimaryKeyConstraint("id"),
        sa.ForeignKeyConstraint(["generated_by"], ["users.id"]),
        sa.UniqueConstraint("jahr", "kw", name="uk_jahr_kw"),
    )

    # ---- 8. yearly_summary (no FK) ----
    op.create_table(
        "yearly_summary",
        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
        sa.Column("jahr", sa.SmallInteger(), nullable=False),
        sa.Column("kw", sa.SmallInteger(), nullable=False),
        # Overall counts
        sa.Column("erstberatungen", sa.Integer(), server_default="0"),
        sa.Column("ablehnungen", sa.Integer(), server_default="0"),
        sa.Column("unterlagen", sa.Integer(), server_default="0"),
        sa.Column("keine_rueckmeldung", sa.Integer(), server_default="0"),
        sa.Column("gutachten_gesamt", sa.Integer(), server_default="0"),
        sa.Column("gutachten_alternative", sa.Integer(), server_default="0"),
        sa.Column("gutachten_bestaetigung", sa.Integer(), server_default="0"),
        # Per-Fallgruppe: onko
        sa.Column("onko_anzahl", sa.Integer(), server_default="0"),
        sa.Column("onko_gutachten", sa.Integer(), server_default="0"),
        sa.Column("onko_keine_rm", sa.Integer(), server_default="0"),
        # Per-Fallgruppe: kardio
        sa.Column("kardio_anzahl", sa.Integer(), server_default="0"),
        sa.Column("kardio_gutachten", sa.Integer(), server_default="0"),
        sa.Column("kardio_keine_rm", sa.Integer(), server_default="0"),
        # Per-Fallgruppe: intensiv
        sa.Column("intensiv_anzahl", sa.Integer(), server_default="0"),
        sa.Column("intensiv_gutachten", sa.Integer(), server_default="0"),
        sa.Column("intensiv_keine_rm", sa.Integer(), server_default="0"),
        # Per-Fallgruppe: galle
        sa.Column("galle_anzahl", sa.Integer(), server_default="0"),
        sa.Column("galle_gutachten", sa.Integer(), server_default="0"),
        sa.Column("galle_keine_rm", sa.Integer(), server_default="0"),
        # Per-Fallgruppe: sd
        sa.Column("sd_anzahl", sa.Integer(), server_default="0"),
        sa.Column("sd_gutachten", sa.Integer(), server_default="0"),
        sa.Column("sd_keine_rm", sa.Integer(), server_default="0"),
        # Gutachten-Typ per Fallgruppe
        sa.Column("onko_alternative", sa.Integer(), server_default="0"),
        sa.Column("onko_bestaetigung", sa.Integer(), server_default="0"),
        sa.Column("kardio_alternative", sa.Integer(), server_default="0"),
        sa.Column("kardio_bestaetigung", sa.Integer(), server_default="0"),
        sa.Column("intensiv_alternative", sa.Integer(), server_default="0"),
        sa.Column("intensiv_bestaetigung", sa.Integer(), server_default="0"),
        sa.Column("galle_alternative", sa.Integer(), server_default="0"),
        sa.Column("galle_bestaetigung", sa.Integer(), server_default="0"),
        sa.Column("sd_alternative", sa.Integer(), server_default="0"),
        sa.Column("sd_bestaetigung", sa.Integer(), server_default="0"),
        # Therapieaenderung counts
        sa.Column("ta_ja", sa.Integer(), server_default="0"),
        sa.Column("ta_nein", sa.Integer(), server_default="0"),
        sa.Column("ta_diagnosekorrektur", sa.Integer(), server_default="0"),
        sa.Column("ta_unterversorgung", sa.Integer(), server_default="0"),
        sa.Column("ta_uebertherapie", sa.Integer(), server_default="0"),
        sa.PrimaryKeyConstraint("id"),
        sa.UniqueConstraint("jahr", "kw", name="uk_jahr_kw"),
    )

    # ---- 9. import_log (FK -> users) ----
    op.create_table(
        "import_log",
        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
        sa.Column("filename", sa.String(255), nullable=False),
        sa.Column("import_type", sa.String(50), nullable=False),
        sa.Column(
            "cases_imported", sa.Integer(), nullable=False, server_default="0"
        ),
        sa.Column(
            "cases_skipped", sa.Integer(), nullable=False, server_default="0"
        ),
        sa.Column(
            "cases_updated", sa.Integer(), nullable=False, server_default="0"
        ),
        sa.Column("errors", sa.Text(), nullable=True),
        sa.Column("details", mysql.JSON(), nullable=True),
        sa.Column("imported_by", sa.Integer(), nullable=True),
        sa.Column(
            "imported_at",
            sa.DateTime(),
            nullable=False,
            server_default=sa.func.now(),
        ),
        sa.PrimaryKeyConstraint("id"),
        sa.ForeignKeyConstraint(["imported_by"], ["users.id"]),
        sa.CheckConstraint(
            "import_type IN "
            "('csv_crm','icd_xlsx','historical_excel','excel_sync')",
            name="chk_imp_type",
        ),
    )

    # ---- 10. audit_log (FK -> users) ----
    op.create_table(
        "audit_log",
        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
        sa.Column("user_id", sa.Integer(), nullable=True),
        sa.Column("action", sa.String(100), nullable=False),
        sa.Column("entity_type", sa.String(50), nullable=True),
        sa.Column("entity_id", sa.Integer(), nullable=True),
        sa.Column("old_values", mysql.JSON(), nullable=True),
        sa.Column("new_values", mysql.JSON(), nullable=True),
        sa.Column("ip_address", sa.String(45), nullable=True),
        sa.Column("user_agent", sa.Text(), nullable=True),
        sa.Column(
            "created_at",
            sa.DateTime(),
            nullable=False,
            server_default=sa.func.now(),
        ),
        sa.PrimaryKeyConstraint("id"),
        sa.ForeignKeyConstraint(["user_id"], ["users.id"]),
        sa.Index("idx_user", "user_id"),
        sa.Index("idx_entity", "entity_type", "entity_id"),
        sa.Index("idx_created", "created_at"),
    )

    # ---- 11. notifications (FK -> users) ----
    op.create_table(
        "notifications",
        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
        sa.Column("recipient_id", sa.Integer(), nullable=False),
        sa.Column("notification_type", sa.String(50), nullable=False),
        sa.Column("title", sa.String(255), nullable=False),
        sa.Column("message", sa.Text(), nullable=True),
        sa.Column("related_entity_type", sa.String(50), nullable=True),
        sa.Column("related_entity_id", sa.Integer(), nullable=True),
        sa.Column("is_read", sa.Boolean(), nullable=False, server_default="0"),
        sa.Column(
            "email_sent", sa.Boolean(), nullable=False, server_default="0"
        ),
        sa.Column("email_sent_at", sa.DateTime(), nullable=True),
        sa.Column(
            "created_at",
            sa.DateTime(),
            nullable=False,
            server_default=sa.func.now(),
        ),
        sa.PrimaryKeyConstraint("id"),
        sa.ForeignKeyConstraint(["recipient_id"], ["users.id"]),
        sa.Index("idx_recipient", "recipient_id", "is_read"),
        sa.CheckConstraint(
            "notification_type IN ("
            "'new_cases_uploaded','icd_entered','icd_uploaded',"
            "'report_ready','coding_completed')",
            name="chk_notif",
        ),
    )


def downgrade() -> None:
    # Drop in reverse order of creation (respecting FK dependencies).
    op.drop_table("notifications")
    op.drop_table("audit_log")
    op.drop_table("import_log")
    op.drop_table("yearly_summary")
    op.drop_table("weekly_reports")
    op.drop_table("case_icd_codes")
    op.drop_index("idx_pending_icd", table_name="cases")
    op.drop_table("cases")
    op.drop_table("allowed_domains")
    op.drop_table("invitation_links")
    op.drop_table("refresh_tokens")
    op.drop_table("users")