Scaffold SQLAlchemy models, routers, and Alembic migrations
- app/models/: Printer, Filament, PrintJob, Todo, PricingConfig with full SQLAlchemy 2.x mapped columns and relationships - app/routers/: list + get-by-id endpoints for all five resources - app/db.py: SQLAlchemy engine + SessionLocal + get_db dependency - alembic/: env.py reads MYSQL_* env vars; 0001_initial_schema mirrors db.sql - alembic.ini: script_location configured, URL injected at runtime Since db.sql already created the tables, stamp the DB before running future migrations: alembic stamp head Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Martin Hohenberg
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alembic/versions/0001_initial_schema.py
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112
alembic/versions/0001_initial_schema.py
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"""initial schema
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Revision ID: 0001
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Revises:
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Create Date: 2026-06-18
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"""
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from typing import Sequence, Union
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import sqlalchemy as sa
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from alembic import op
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from sqlalchemy.dialects import mysql
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revision: str = "0001"
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down_revision: Union[str, None] = None
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branch_labels: Union[str, Sequence[str], None] = None
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depends_on: Union[str, Sequence[str], None] = None
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def upgrade() -> None:
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op.create_table(
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"printers",
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sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
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sa.Column("name", sa.String(length=100), nullable=False),
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sa.Column("model", sa.String(length=100), nullable=True),
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sa.Column("location", sa.String(length=100), nullable=True),
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sa.Column(
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"status",
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mysql.ENUM("idle", "printing", "error", "offline"),
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nullable=False,
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server_default="offline",
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),
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sa.Column("created_at", sa.DateTime(), nullable=False, server_default=sa.text("CURRENT_TIMESTAMP")),
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sa.Column("updated_at", sa.DateTime(), nullable=False, server_default=sa.text("CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP")),
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sa.PrimaryKeyConstraint("id"),
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)
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op.create_table(
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"filaments",
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sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
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sa.Column("brand", sa.String(length=100), nullable=True),
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sa.Column(
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"material",
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mysql.ENUM("PLA", "PETG", "ABS", "ASA", "TPU", "Nylon", "PC", "Other"),
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nullable=False,
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server_default="PLA",
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),
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sa.Column("color", sa.String(length=100), nullable=True),
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sa.Column("color_hex", sa.String(length=7), nullable=True),
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sa.Column("weight_total_g", sa.Numeric(precision=8, scale=2), nullable=False),
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sa.Column("weight_remaining_g", sa.Numeric(precision=8, scale=2), nullable=False),
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sa.Column("price_per_kg_eur", sa.Numeric(precision=8, scale=2), nullable=True),
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sa.Column("created_at", sa.DateTime(), nullable=False, server_default=sa.text("CURRENT_TIMESTAMP")),
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sa.Column("updated_at", sa.DateTime(), nullable=False, server_default=sa.text("CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP")),
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sa.PrimaryKeyConstraint("id"),
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)
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op.create_table(
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"pricing_config",
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sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
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sa.Column("name", sa.String(length=100), nullable=False, server_default="default"),
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sa.Column("electricity_kwh_eur", sa.Numeric(precision=6, scale=4), nullable=False, server_default="0.3000"),
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sa.Column("printer_watt", sa.Numeric(precision=8, scale=2), nullable=False, server_default="200.00"),
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sa.Column("hourly_rate_eur", sa.Numeric(precision=8, scale=2), nullable=False, server_default="0.00"),
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sa.Column("markup_percent", sa.Numeric(precision=5, scale=2), nullable=False, server_default="20.00"),
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sa.Column("valid_from", sa.Date(), nullable=False, server_default=sa.text("(CURRENT_DATE)")),
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sa.Column("created_at", sa.DateTime(), nullable=False, server_default=sa.text("CURRENT_TIMESTAMP")),
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sa.PrimaryKeyConstraint("id"),
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)
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op.create_table(
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"todos",
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sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
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sa.Column("title", sa.String(length=255), nullable=False),
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sa.Column("done", sa.Boolean(), nullable=False, server_default="0"),
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sa.Column("printer_id", sa.Integer(), nullable=True),
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sa.Column("created_at", sa.DateTime(), nullable=False, server_default=sa.text("CURRENT_TIMESTAMP")),
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sa.Column("updated_at", sa.DateTime(), nullable=False, server_default=sa.text("CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP")),
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sa.ForeignKeyConstraint(["printer_id"], ["printers.id"], name="fk_todo_printer"),
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sa.PrimaryKeyConstraint("id"),
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)
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op.create_table(
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"print_jobs",
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sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
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sa.Column("printer_id", sa.Integer(), nullable=False),
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sa.Column("filament_id", sa.Integer(), nullable=True),
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sa.Column("name", sa.String(length=200), nullable=False),
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sa.Column("file_name", sa.String(length=255), nullable=True),
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sa.Column(
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"status",
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mysql.ENUM("queued", "printing", "done", "failed", "cancelled"),
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nullable=False,
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server_default="queued",
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),
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sa.Column("queue_position", sa.Integer(), nullable=True),
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sa.Column("started_at", sa.DateTime(), nullable=True),
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sa.Column("finished_at", sa.DateTime(), nullable=True),
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sa.Column("duration_minutes", sa.Integer(), nullable=True),
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sa.Column("filament_used_g", sa.Numeric(precision=8, scale=2), nullable=True),
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sa.Column("cost_eur", sa.Numeric(precision=8, scale=2), nullable=True),
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sa.Column("notes", sa.Text(), nullable=True),
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sa.Column("created_at", sa.DateTime(), nullable=False, server_default=sa.text("CURRENT_TIMESTAMP")),
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sa.Column("updated_at", sa.DateTime(), nullable=False, server_default=sa.text("CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP")),
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sa.ForeignKeyConstraint(["filament_id"], ["filaments.id"], name="fk_job_filament"),
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sa.ForeignKeyConstraint(["printer_id"], ["printers.id"], name="fk_job_printer"),
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sa.PrimaryKeyConstraint("id"),
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)
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def downgrade() -> None:
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op.drop_table("print_jobs")
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op.drop_table("todos")
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op.drop_table("pricing_config")
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op.drop_table("filaments")
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op.drop_table("printers")
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