84 lines
3.8 KiB
Markdown
84 lines
3.8 KiB
Markdown
# Subjects Backend
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## Purpose
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`subjects` is the per-organization catalog of teaching subjects (name, code, description). It is
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a generic-CRUD slice assembled from the shared factories; the backend is the source of truth for
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subject records.
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## Slice Files (by layer)
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- Route: `src/routes/subjects.ts` — `createCrudRouter(controller, { permission: 'subjects' })`.
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- Controller: `src/api/controllers/subjects.controller.ts` — `createCrudController(service, { csvFields })`.
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- Service (BLL): `src/services/subjects.ts` — `createCrudService(DbApi, { notFoundCode: 'subjectsNotFound' })`.
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- Repository (DAL): `src/db/api/subjects.ts` (`SubjectsDBApi`) — entity-specific
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`create`/`bulkImport`/`update`/`findBy`/`findAll`; `remove`/`deleteByIds`/`findAllAutocomplete`
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delegate to `db/api/shared/repository.ts`.
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- Model: `src/db/models/subjects.ts`.
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- Shared used: CRUD factories (`services/shared/crud-service.ts`,
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`api/controllers/shared/crud-controller.ts`, `api/http/crud-router.ts`), repository helpers
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(`db/api/shared/repository.ts`), `shared/constants/pagination.ts` (`resolvePagination`),
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`shared/constants/database.ts` (`BULK_IMPORT_TIMESTAMP_STEP_MS`), `db/utils.ts` (`Utils`).
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## API
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The standard generic-CRUD surface (all under `/api/subjects`, JWT + `${METHOD}_SUBJECTS`
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permission, all `200`) — see `backend-architecture.md` for the shared contract:
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- `POST /` — body `{ data }`, returns `true`.
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- `POST /bulk-import` — multipart CSV file, returns `true`.
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- `PUT /:id` — body `{ data, id }` (the service reads the id from the **body**), returns `true`.
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- `DELETE /:id` — returns `true`.
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- `POST /deleteByIds` — body `{ data: string[] }`, returns `true`.
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- `GET /` — query filters, returns `{ rows, count }`; `?filetype=csv` streams a CSV of `csvFields`.
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- `GET /count` — returns `{ rows: [], count }`.
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- `GET /autocomplete` — `?query&limit&offset`, returns `[{ id, label }]` where `label` is `name`.
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- `GET /:id` — returns the record with eager associations (see Data Contract).
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`csvFields`: `id`, `name`, `code`, `description`.
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## Access Rules
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- JWT required; the whole router is guarded by `checkCrudPermissions('subjects')`, deriving
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`READ_SUBJECTS` / `CREATE_SUBJECTS` / `UPDATE_SUBJECTS` / `DELETE_SUBJECTS` per HTTP method.
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- Access is granted by role permission or per-user `custom_permissions` (see `permissions.md`).
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## Tenant Scope
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- `findAll` scopes `where.organizationId` to `currentUser.organizationId`; a `globalAccess`
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role clears the org filter (sees all tenants).
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- `create` assigns the organization from `currentUser.organizationId`; `update` only reassigns
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organization for `globalAccess` users (otherwise it stays the caller's org).
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## Data Contract
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Model columns (`paranoid`, soft-delete via `deletedAt`):
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- `id` (UUID PK).
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- `name`, `code`, `description` — TEXT, nullable.
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- `importHash` (unique), `organizationId`, `createdById`, `updatedById`, timestamps.
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Associations: `belongsTo` organization, createdBy/updatedBy (users); `hasMany`
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`class_subjects_subject`. `findBy`/`GET /:id` eager-load class_subjects_subject and organization
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in a single `Promise.all`.
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List filters (`SubjectsFilter`): `id`, `name` (ilike), `code` (ilike), `description` (ilike),
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`organization`, `createdAtRange`, plus `field`/`sort` ordering and `limit`/`page` pagination.
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## Behavior / Notes
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- `create`/`update` wire the organization relation via the `setOrganization` association mixin.
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- `bulkImport` offsets `createdAt` per row by `BULK_IMPORT_TIMESTAMP_STEP_MS` to preserve order.
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- List pagination uses the shared `resolvePagination` defaults (page size 10, capped at 100).
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- Note: `SubjectsFilter` accepts an `active` flag the model has no column for; it is currently
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inert (kept for source accuracy).
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## Tests
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None yet.
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## Related
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- Generic-CRUD contract: `backend-architecture.md`; related slices: `class_subjects`, `classes`,
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`permissions.md`.
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