hantim-server/USECASES.md

# Use Cases

## 1. Provision a new server

Set up a fresh Rocky Linux 9 server from scratch.

```bash
dnf install -y git
git clone https://git.timothykim.net/hantim/hantim-server.git /opt/hantim
bash /opt/hantim/scripts/bootstrap.sh
```

**What happens:**
- Installs all dependencies (jq, certbot, unzip, Docker)
- Installs `bws` CLI, prompts for Bitwarden Secrets Manager access token
- Fetches registry token and deploy SSH public key via `bws`
- Logs into Docker registry
- Creates deploy user with restricted SSH + sudo
- Runs `configure.sh`:
  - Opens firewall ports (HTTP, HTTPS, Garage RPC)
  - Sets up certbot renewal
  - Deploys all services via `deploy.sh` (generates `.env` files, issues certs, starts containers)

**Prerequisites:**
- DNS for all configured domains must point to the server
- Bitwarden Secrets Manager access token for the `hantim-server` machine account
- Docker images must exist in the Gitea registry (or apps will start on next push)

## 2. Restore from backup

Identical to provisioning a new server. Run the same three commands on a
fresh server.

- `bootstrap.sh` and `configure.sh` are idempotent -- safe to re-run
- SSL certs are re-issued automatically (Let's Encrypt)
- Docker images are pulled from the Gitea registry
- No data migration needed for stateless static sites

## 3. Add a new static site

From your dev machine (single command):

```bash
./tools/new-app.sh example.com
```

**Prerequisites:**
- Bitwarden Secrets Manager must contain `hantim-new-app-script`,
  `hantim-vultr-api-key`, and `hantim-deploy-ssh-private-key`
- Domain nameservers must be pointed to Vultr (configured on directnic.com)
- Dependencies: `bws`, `jq`, `dig`
- `BWS_ACCESS_TOKEN` env var or token saved at `~/.config/hantim/bws-token`

**What happens (fully automated):**
1. Resolves server IP from `hantim.net`
2. Fetches Gitea API token, Vultr API key, and deploy SSH key from Bitwarden Secrets Manager
3. Creates DNS zone on Vultr (if needed) and A records for bare + www
4. Waits for DNS to propagate
5. Creates Gitea repo `hantim/example.com` from `static-site-template`
6. Creates local files:
   - `docker/example.com/compose.yml` (container name: `example_com`)
   - `.gitea/workflows/deploy-example.com.yml`
   - `docker/nginx/conf.d/example.com.conf` (HTTP->HTTPS, bare->www, proxy)
7. SSHes to server as deploy user, issues SSL cert via webroot (zero downtime)
8. Commits and pushes hantim-server (triggers deploy)
9. Triggers initial build of the app repo via Gitea API
10. Polls `https://www.example.com` until it responds (up to 3 minutes)

After the site is live, clone the app repo and customize:

```bash
git clone git@git.timothykim.net:hantim/example.com.git
cd example.com
# edit static/index.html, etc.
git add . && git commit -m "initial content" && git push
```

## 4. Update app code

Push a change to the app repo (e.g., `example.com`):

```bash
cd example.com
# make changes
git add . && git commit -m "update content" && git push
```

**What happens:**
1. Gitea Actions runs `build.yml`: builds Docker image, pushes to registry
2. SSHes into server, runs `deploy-example.com`
3. `deploy.sh` pulls latest hantim-server, pulls new image, restarts container

No manual steps needed.

## 5. Update Docker Compose config

Edit a compose file in this repo and push:

```bash
vim docker/example.com/compose.yml
git add docker/example.com/compose.yml
git commit -m "update example.com config"
git push
```

**What happens:**
1. `deploy-example.com.yml` workflow triggers (path match)
2. `deploy.sh` pulls latest code, pulls image, runs `docker compose up -d`

## 6. Update nginx config

Edit an nginx config in this repo and push:

```bash
vim docker/nginx/conf.d/example.com.conf
git add docker/nginx/conf.d/example.com.conf
git commit -m "update nginx config"
git push
```

**What happens:**
1. `deploy-nginx.yml` workflow triggers (path match)
2. `deploy.sh` pulls latest code
3. If any conf files reference certs that don't exist yet, nginx is briefly
   stopped and certs are issued via standalone certbot (auto-restarts on failure)
4. Tests nginx config with `nginx -t` -- if it fails, deploy aborts and the
   running nginx is untouched
5. Runs `docker compose up -d` and reloads nginx

**Note:** Each conf file must contain server blocks for only one domain. The
cert name is derived from the filename (e.g. `example.com.conf` -> cert
`example.com`). Redirect-only domains get their own conf file.

## 7. Re-run configure on existing server

Safe to do at any time, manually or via CI:

```bash
cd /opt/hantim
git pull
bash scripts/configure.sh
```

Or push a change to `scripts/configure.sh` — the `provision.yml` workflow
triggers automatically.

- All steps are idempotent
- Existing certs are skipped
- Brief nginx downtime (seconds) while certbot checks run
- Services are restarted