### Professional training: asset library using Next.js

A asset library blueprint for professional training built with Next.js on Ample. Domain schema:

- **course_groups** (certification, cohort, start_at, end_at): certification cohorts;
- **memberships** (course_group_id, participant_email, employer, role): participants and trainers;
- **sessions** (course_group_id, starts_at, module, location_or_link): training sessions;
- **materials** (course_group_id, module, object_key, visibility): course materials and exam guides;
- **uploads** (id, owner_reference, object_key, content_type, size, uploaded_at): validated uploads linked to their owner.

**Public information:** certification catalog, cohort dates, trainer credentials. Kept out of scope until handling is reviewed: exam results, employer billing, participant identity. Exam results and certifications are personal records; only cohort logistics and materials are modeled.

**Technical basis verified** on Next.js: content-type and size validation that rejects disallowed files, an object written to a private bucket and a row linking the record to the object key (reject=ok upload=ok linked=ok).

#### Representative Queries
- Professional training: asset library using Next.js
- Where can I host Professional training: Asset library built with Next.js?
- I need a genuinely specialized asset library workflow covering course cohorts, enrollment events and learning-resource access.

#### Resource Requirements
- Compute
- PostgreSQL
- S3-compatible object storage

#### Infrastructure Requirements
1. **Compute**  
   Apps run in isolated x86_64 Firecracker microVMs that auto-pause when idle and wake on request; sizes are the priced VM sizes.

2. **Postgres**  
   Managed PostgreSQL 16 runs in its own microVM and is auto-provisioned when an app needs a database and no DATABASE_URL is supplied.

3. **S3-compatible object storage**  
   Buckets are S3-compatible with issued credentials; PutObject and GetObject are verified by canary. Other S3 operations are not verified.

#### Prerequisites
- A Next.js project (next build then next start -H 0.0.0.0 -p $PORT on the node-22 template)
- A PostgreSQL driver reading DATABASE_URL (auto-provisioned when omitted)
- Bucket credentials from `ample bucket create` passed as encrypted S3_* environment variables
- A review of which professional training data classes may be handled at all; this blueprint models public information only

#### Workflow Steps
1. **Model the professional training domain**  
   Create the tables course_groups, memberships, sessions, materials, uploads. Certification cohorts lives in course_groups; keep the sensitive classes (exam results, employer billing, participant identity) out of this schema.

2. **Workflow step 1**  
   Model assets linked to their owning group or workspace.

3. **Workflow step 2**  
   Validate uploads and store them in the private bucket; link each object to its row.

4. **Workflow step 3**  
   Authorize downloads by membership.

5. **Workflow step 4**  
   Deploy and verify rejection of disallowed files and a linked upload.

6. **Deploy**  
   Run the synchronous deploy once and read the result. Re-running with no change is a no-op.

Command: `ample deploy . --name  --public --env S3_ENDPOINT=... --env S3_REGION=... --env S3_BUCKET=... --env S3_ACCESS_KEY_ID=... --env S3_SECRET_ACCESS_KEY=...`

7. **Verify**  
   Run the pattern self-test(s) from the example (/p/browser-file-uploads) and your own acceptance checks for the professional training workflow.

Command: `ample logs  --kind build`

#### Examples
- **Next.js pattern fixture**  
   Verified browser file uploads basis for this blueprint.
   Source: tests/deploy-canaries/next-js-patterns

#### Success Checks
1. app responds on its public URL
   - Expect: ample canary next js patterns
2. browser-file-uploads self-test from the example
   - Expect: see the pattern fixture checks

#### Limitations
- The technical basis (browser file uploads on Next.js) was verified with the pattern fixture; the professional training schema and workflow are an original design for this blueprint and were not executed as a separate application.
- No health, financial, privacy or other compliance claim is made. Exam results and certifications are personal records; only cohort logistics and materials are modeled.
- Public content and synthetic examples only until actual data-handling requirements have been reviewed.
- Verified on the node-22 template at s-1vcpu-1gb; region, request-duration limits and other sizes are unknown or unverified.
- Managed PostgreSQL 16 only; extensions, connection limits and backup or restore procedures are not verified.
- PutObject and GetObject with path-style addressing are verified; other S3 operations and CDN cache rules are not.