Add printer types with bed volume + add-printer UI

- PrinterType model: name, bed_x_mm/y/z, linked to Printer via type_id
- Migration 0002: creates printer_types, adds type_id to printers, drops model
- /printer-types page: table + Add Type modal form
- /printers page: Add Printer modal with type dropdown (disabled if no types)
- API: GET/POST/DELETE /api/printer-types

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

alembic/versions/0002_printer_types.py

@@ -0,0 +1,40 @@
+"""printer_types table and link to printers
+
+Revision ID: 0002
+Revises: 0001
+Create Date: 2026-06-18
+
+"""
+from typing import Sequence, Union
+
+import sqlalchemy as sa
+from alembic import op
+
+revision: str = "0002"
+down_revision: Union[str, None] = "0001"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    op.create_table(
+        "printer_types",
+        sa.Column("id", sa.Integer(), autoincrement=True, nullable=False),
+        sa.Column("name", sa.String(length=100), nullable=False),
+        sa.Column("bed_x_mm", sa.Integer(), nullable=False),
+        sa.Column("bed_y_mm", sa.Integer(), nullable=False),
+        sa.Column("bed_z_mm", sa.Integer(), nullable=False),
+        sa.Column("created_at", sa.DateTime(), nullable=False, server_default=sa.text("CURRENT_TIMESTAMP")),
+        sa.PrimaryKeyConstraint("id"),
+        sa.UniqueConstraint("name"),
+    )
+    op.add_column("printers", sa.Column("type_id", sa.Integer(), nullable=True))
+    op.create_foreign_key("fk_printer_type", "printers", "printer_types", ["type_id"], ["id"])
+    op.drop_column("printers", "model")
+
+
+def downgrade() -> None:
+    op.drop_constraint("fk_printer_type", "printers", type_="foreignkey")
+    op.drop_column("printers", "type_id")
+    op.add_column("printers", sa.Column("model", sa.String(length=100), nullable=True))
+    op.drop_table("printer_types")

app/main.py

@@ -5,7 +5,7 @@ from fastapi import FastAPI, Request
 from fastapi.responses import JSONResponse
 
 from app.db import check_db, run_migrations
-from app.routers import filaments, pricing, print_jobs, printers, todos
+from app.routers import filaments, pricing, print_jobs, printer_types, printers, todos
 from app.routers import ui
 
 logging.basicConfig(
@@ -39,6 +39,7 @@ async def unhandled_exception(request: Request, exc: Exception):
 
 
 # JSON API
+app.include_router(printer_types.router, prefix="/api")
 app.include_router(printers.router, prefix="/api")
 app.include_router(filaments.router, prefix="/api")
 app.include_router(print_jobs.router, prefix="/api")

app/models/__init__.py

@@ -3,6 +3,7 @@ from app.models.filament import Filament
 from app.models.pricing import PricingConfig
 from app.models.print_job import PrintJob
 from app.models.printer import Printer
+from app.models.printer_type import PrinterType
 from app.models.todo import Todo
 
-__all__ = ["Base", "Printer", "Filament", "PrintJob", "Todo", "PricingConfig"]
+__all__ = ["Base", "Printer", "PrinterType", "Filament", "PrintJob", "Todo", "PricingConfig"]

app/models/printer.py

@@ -1,7 +1,7 @@
 import enum
 from datetime import datetime
 
-from sqlalchemy import DateTime, Enum, String, func
+from sqlalchemy import DateTime, Enum, ForeignKey, String, func
 from sqlalchemy.orm import Mapped, mapped_column, relationship
 
 from app.models.base import Base
@@ -19,8 +19,8 @@ class Printer(Base):
 
     id: Mapped[int] = mapped_column(primary_key=True)
     name: Mapped[str] = mapped_column(String(100))
-    model: Mapped[str | None] = mapped_column(String(100))
     location: Mapped[str | None] = mapped_column(String(100))
+    type_id: Mapped[int | None] = mapped_column(ForeignKey("printer_types.id"))
     status: Mapped[PrinterStatus] = mapped_column(
         Enum(PrinterStatus), default=PrinterStatus.offline
     )
@@ -29,5 +29,6 @@ class Printer(Base):
         DateTime, server_default=func.now(), onupdate=func.now()
     )
 
+    printer_type: Mapped["PrinterType | None"] = relationship(back_populates="printers")
     jobs: Mapped[list["PrintJob"]] = relationship(back_populates="printer")
     todos: Mapped[list["Todo"]] = relationship(back_populates="printer")

app/models/printer_type.py

@@ -0,0 +1,19 @@
+from datetime import datetime
+
+from sqlalchemy import DateTime, Integer, String, func
+from sqlalchemy.orm import Mapped, mapped_column, relationship
+
+from app.models.base import Base
+
+
+class PrinterType(Base):
+    __tablename__ = "printer_types"
+
+    id: Mapped[int] = mapped_column(primary_key=True)
+    name: Mapped[str] = mapped_column(String(100), unique=True)
+    bed_x_mm: Mapped[int] = mapped_column(Integer)
+    bed_y_mm: Mapped[int] = mapped_column(Integer)
+    bed_z_mm: Mapped[int] = mapped_column(Integer)
+    created_at: Mapped[datetime] = mapped_column(DateTime, server_default=func.now())
+
+    printers: Mapped[list["Printer"]] = relationship(back_populates="printer_type")

app/routers/printer_types.py

@@ -0,0 +1,39 @@
+from fastapi import APIRouter, Depends, HTTPException
+from pydantic import BaseModel
+from sqlalchemy.orm import Session
+
+from app.db import get_db
+from app.models.printer_type import PrinterType
+
+router = APIRouter(prefix="/printer-types", tags=["printer-types"])
+
+
+class PrinterTypeCreate(BaseModel):
+    name: str
+    bed_x_mm: int
+    bed_y_mm: int
+    bed_z_mm: int
+
+
+@router.get("/")
+def list_printer_types(db: Session = Depends(get_db)):
+    return [t.to_dict() for t in db.query(PrinterType).order_by(PrinterType.name).all()]
+
+
+@router.post("/")
+def create_printer_type(data: PrinterTypeCreate, db: Session = Depends(get_db)):
+    pt = PrinterType(**data.model_dump())
+    db.add(pt)
+    db.commit()
+    db.refresh(pt)
+    return pt.to_dict()
+
+
+@router.delete("/{type_id}")
+def delete_printer_type(type_id: int, db: Session = Depends(get_db)):
+    pt = db.query(PrinterType).filter(PrinterType.id == type_id).first()
+    if not pt:
+        raise HTTPException(status_code=404, detail="Printer type not found")
+    db.delete(pt)
+    db.commit()
+    return {"ok": True}

app/routers/ui.py

@@ -1,12 +1,14 @@
-from fastapi import APIRouter, Depends, Request
+from fastapi import APIRouter, Depends, Form, Request
-from fastapi.responses import HTMLResponse
+from fastapi.responses import HTMLResponse, RedirectResponse
 from fastapi.templating import Jinja2Templates
 from sqlalchemy.orm import Session
+from starlette.status import HTTP_303_SEE_OTHER
 
 from app.db import get_db
 from app.models.filament import Filament
 from app.models.print_job import JobStatus, PrintJob
 from app.models.printer import Printer, PrinterStatus
+from app.models.printer_type import PrinterType
 from app.models.pricing import PricingConfig
 from app.models.todo import Todo
 
@@ -37,9 +39,50 @@ def printers_page(request: Request, db: Session = Depends(get_db)):
         "request": request,
         "active": "printers",
         "printers": db.query(Printer).order_by(Printer.name).all(),
+        "printer_types": db.query(PrinterType).order_by(PrinterType.name).all(),
     })
 
 
+@router.post("/printers")
+def create_printer(
+    name: str = Form(...),
+    location: str = Form(""),
+    type_id: str = Form(""),
+    db: Session = Depends(get_db),
+):
+    printer = Printer(
+        name=name.strip(),
+        location=location.strip() or None,
+        type_id=int(type_id) if type_id else None,
+    )
+    db.add(printer)
+    db.commit()
+    return RedirectResponse(url="/printers", status_code=HTTP_303_SEE_OTHER)
+
+
+@router.get("/printer-types", response_class=HTMLResponse)
+def printer_types_page(request: Request, db: Session = Depends(get_db)):
+    return templates.TemplateResponse("printer_types.html", {
+        "request": request,
+        "active": "printers",
+        "printer_types": db.query(PrinterType).order_by(PrinterType.name).all(),
+    })
+
+
+@router.post("/printer-types")
+def create_printer_type(
+    name: str = Form(...),
+    bed_x_mm: int = Form(...),
+    bed_y_mm: int = Form(...),
+    bed_z_mm: int = Form(...),
+    db: Session = Depends(get_db),
+):
+    pt = PrinterType(name=name.strip(), bed_x_mm=bed_x_mm, bed_y_mm=bed_y_mm, bed_z_mm=bed_z_mm)
+    db.add(pt)
+    db.commit()
+    return RedirectResponse(url="/printer-types", status_code=HTTP_303_SEE_OTHER)
+
+
 @router.get("/jobs", response_class=HTMLResponse)
 def jobs_page(request: Request, db: Session = Depends(get_db)):
     return templates.TemplateResponse("jobs.html", {

app/templates/printer_types.html

@@ -0,0 +1,86 @@
+{% extends "base.html" %}
+{% block title %}Printer Types — POPS{% endblock %}
+
+{% block content %}
+<div class="d-flex align-items-center justify-content-between mb-4">
+  <div class="d-flex align-items-center gap-3">
+    <a href="/printers" class="text-secondary text-decoration-none"><i class="bi bi-arrow-left"></i></a>
+    <h5 class="text-white mb-0">Printer Types</h5>
+  </div>
+  <button class="btn btn-sm btn-primary" data-bs-toggle="modal" data-bs-target="#addTypeModal">
+    <i class="bi bi-plus-lg me-1"></i>Add Type
+  </button>
+</div>
+
+<div class="card">
+  {% if printer_types %}
+  <table class="table table-dark table-hover mb-0 align-middle">
+    <thead>
+      <tr class="text-secondary small">
+        <th class="fw-normal">Name</th>
+        <th class="fw-normal text-center">Bed X (mm)</th>
+        <th class="fw-normal text-center">Bed Y (mm)</th>
+        <th class="fw-normal text-center">Bed Z (mm)</th>
+        <th class="fw-normal text-center">Volume</th>
+      </tr>
+    </thead>
+    <tbody>
+    {% for t in printer_types %}
+    <tr>
+      <td class="fw-medium text-white">{{ t.name }}</td>
+      <td class="text-secondary text-center">{{ t.bed_x_mm }}</td>
+      <td class="text-secondary text-center">{{ t.bed_y_mm }}</td>
+      <td class="text-secondary text-center">{{ t.bed_z_mm }}</td>
+      <td class="text-secondary small text-center">
+        {{ (t.bed_x_mm * t.bed_y_mm * t.bed_z_mm / 1000) | round(0) | int }} cm³
+      </td>
+    </tr>
+    {% endfor %}
+    </tbody>
+  </table>
+  {% else %}
+  <div class="card-body text-secondary">No printer types defined yet.</div>
+  {% endif %}
+</div>
+
+{# ── Add Type Modal ── #}
+<div class="modal fade" id="addTypeModal" tabindex="-1">
+  <div class="modal-dialog">
+    <div class="modal-content bg-dark border-secondary">
+      <form method="POST" action="/printer-types">
+        <div class="modal-header border-secondary">
+          <h6 class="modal-title text-white">Add Printer Type</h6>
+          <button type="button" class="btn-close btn-close-white" data-bs-dismiss="modal"></button>
+        </div>
+        <div class="modal-body d-flex flex-column gap-3">
+
+          <div>
+            <label class="form-label text-secondary small">Name <span class="text-danger">*</span></label>
+            <input type="text" name="name" class="form-control bg-dark border-secondary text-white"
+                   placeholder="e.g. Bambulab X1C" required autofocus>
+          </div>
+
+          <div>
+            <label class="form-label text-secondary small mb-2">Print bed volume (mm) <span class="text-danger">*</span></label>
+            <div class="d-flex gap-2 align-items-center">
+              <input type="number" name="bed_x_mm" class="form-control bg-dark border-secondary text-white text-center"
+                     placeholder="X" min="1" required>
+              <span class="text-secondary">×</span>
+              <input type="number" name="bed_y_mm" class="form-control bg-dark border-secondary text-white text-center"
+                     placeholder="Y" min="1" required>
+              <span class="text-secondary">×</span>
+              <input type="number" name="bed_z_mm" class="form-control bg-dark border-secondary text-white text-center"
+                     placeholder="Z" min="1" required>
+            </div>
+          </div>
+
+        </div>
+        <div class="modal-footer border-secondary">
+          <button type="button" class="btn btn-secondary btn-sm" data-bs-dismiss="modal">Cancel</button>
+          <button type="submit" class="btn btn-primary btn-sm">Add Type</button>
+        </div>
+      </form>
+    </div>
+  </div>
+</div>
+{% endblock %}

app/templates/printers.html

@@ -2,24 +2,49 @@
 {% block title %}Printers — POPS{% endblock %}
 
 {% block content %}
-<h5 class="text-white mb-4">Printers</h5>
+<div class="d-flex align-items-center justify-content-between mb-4">
+  <h5 class="text-white mb-0">Printers</h5>
+  <div class="d-flex gap-2">
+    <a href="/printer-types" class="btn btn-sm btn-outline-secondary">
+      <i class="bi bi-tags me-1"></i>Manage Types
+    </a>
+    <button class="btn btn-sm btn-primary" data-bs-toggle="modal" data-bs-target="#addPrinterModal"
+            {% if not printer_types %}disabled title="Add a printer type first"{% endif %}>
+      <i class="bi bi-plus-lg me-1"></i>Add Printer
+    </button>
+  </div>
+</div>
+
+{% if not printer_types %}
+<div class="alert alert-secondary border-secondary" role="alert">
+  <i class="bi bi-info-circle me-2"></i>
+  No printer types defined yet.
+  <a href="/printer-types" class="alert-link">Add a printer type</a> before adding printers.
+</div>
+{% endif %}
+
 <div class="card">
   {% if printers %}
   <table class="table table-dark table-hover mb-0 align-middle">
     <thead>
       <tr class="text-secondary small">
         <th class="fw-normal">Name</th>
-        <th class="fw-normal">Model</th>
+        <th class="fw-normal">Type</th>
+        <th class="fw-normal">Bed volume</th>
         <th class="fw-normal">Location</th>
         <th class="fw-normal">Status</th>
-        <th class="fw-normal">Added</th>
       </tr>
     </thead>
     <tbody>
     {% for p in printers %}
     <tr>
       <td class="fw-medium text-white">{{ p.name }}</td>
-      <td class="text-secondary">{{ p.model or '—' }}</td>
+      <td class="text-secondary">{{ p.printer_type.name if p.printer_type else '—' }}</td>
+      <td class="text-secondary small">
+        {% if p.printer_type %}
+          {{ p.printer_type.bed_x_mm }}×{{ p.printer_type.bed_y_mm }}×{{ p.printer_type.bed_z_mm }} mm
+        {% else %}—{% endif %}
+      </td>
       <td class="text-secondary">{{ p.location or '—' }}</td>
       <td>
         {% set s = p.status.value %}
@@ -29,13 +54,55 @@
         {% else                 %}<span class="badge bg-secondary">offline</span>
         {% endif %}
       </td>
-      <td class="text-secondary small">{{ p.created_at.strftime('%d.%m.%Y') }}</td>
     </tr>
     {% endfor %}
     </tbody>
   </table>
   {% else %}
-  <div class="card-body text-secondary">No printers configured yet.</div>
+  <div class="card-body text-secondary">No printers added yet.</div>
   {% endif %}
 </div>
+
+{# ── Add Printer Modal ── #}
+<div class="modal fade" id="addPrinterModal" tabindex="-1">
+  <div class="modal-dialog">
+    <div class="modal-content bg-dark border-secondary">
+      <form method="POST" action="/printers">
+        <div class="modal-header border-secondary">
+          <h6 class="modal-title text-white">Add Printer</h6>
+          <button type="button" class="btn-close btn-close-white" data-bs-dismiss="modal"></button>
+        </div>
+        <div class="modal-body d-flex flex-column gap-3">
+
+          <div>
+            <label class="form-label text-secondary small">Name <span class="text-danger">*</span></label>
+            <input type="text" name="name" class="form-control bg-dark border-secondary text-white"
+                   placeholder="e.g. Bambu #1" required autofocus>
+          </div>
+
+          <div>
+            <label class="form-label text-secondary small">Type <span class="text-danger">*</span></label>
+            <select name="type_id" class="form-select bg-dark border-secondary text-white" required>
+              <option value="">— select —</option>
+              {% for t in printer_types %}
+              <option value="{{ t.id }}">{{ t.name }} ({{ t.bed_x_mm }}×{{ t.bed_y_mm }}×{{ t.bed_z_mm }} mm)</option>
+              {% endfor %}
+            </select>
+          </div>
+
+          <div>
+            <label class="form-label text-secondary small">Location</label>
+            <input type="text" name="location" class="form-control bg-dark border-secondary text-white"
+                   placeholder="e.g. Workshop, Shelf 2">
+          </div>
+
+        </div>
+        <div class="modal-footer border-secondary">
+          <button type="button" class="btn btn-secondary btn-sm" data-bs-dismiss="modal">Cancel</button>
+          <button type="submit" class="btn btn-primary btn-sm">Add Printer</button>
+        </div>
+      </form>
+    </div>
+  </div>
+</div>
 {% endblock %}