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# migration-sandbox
## When to Use
Run database migrations for SandboxLocal environment, apply pending EF Core migrations, create backups, and verify connectivity.
## Prerequisites
- .NET SDK installed (`dotnet --version`)
- PostgreSQL accessible for SandboxLocal
- Connection string in `appsettings.SandboxLocal.json`
- `scripts/safe-migrate.sh` available and executable
## Execution Steps
### Step 1: Verify Script Exists and is Executable
Check: `test -f scripts/safe-migrate.sh`
**If missing:** Error and **STOP**
**If not executable:** `chmod +x scripts/safe-migrate.sh`
### Step 2: Verify Environment Configuration
Check: `test -f src/Managing.Api/appsettings.SandboxLocal.json`
**If missing:** Check `appsettings.Sandbox.json`, else **STOP**
### Step 3: Run Migration Script
Run: `./scripts/safe-migrate.sh SandboxLocal`
**Script performs:** Build projects → Check connectivity → Create DB if needed → Prompt backup → Check pending changes → Generate script → Apply migrations → Verify status
**On success:** Show success message, backup location, log file location
**On failure:** Show error output, diagnose (connectivity, connection string, server status, permissions), provide guidance or **STOP** if unresolvable
## Error Handling
**Script not found:** Check `ls -la scripts/safe-migrate.sh`, **STOP** if missing
**Not executable:** `chmod +x scripts/safe-migrate.sh`, retry
**Database connection fails:** Verify PostgreSQL running, check connection string in `appsettings.SandboxLocal.json`, verify network/firewall/credentials
**Build fails:** Show errors (C# compilation, missing dependencies, config errors), try auto-fix (compilation errors, imports, config), if fixed re-run else **STOP**
**Migration conflicts:** Review migration history, script handles idempotent migrations, schema conflicts may need manual intervention
**Backup fails:** Script warns, recommend fixing before proceeding, warn if proceeding without backup
## Example Execution
**Success flow:**
1. Verify script → ✅
2. Check executable → ✅
3. Verify config → ✅
4. Run: `./scripts/safe-migrate.sh SandboxLocal`
5. Script: Build → Connect → Backup → Generate → Apply → Verify → ✅
6. Show backup/log locations
**Connection fails:** Diagnose connection string/server, provide guidance, **STOP**
**Build fails:** Show errors, try auto-fix, if fixed re-run else **STOP**
## Important Notes
- ✅ Backup recommended, script prompts for it
- ✅ Review migration script before applying
- ✅ Idempotent migrations - safe to run multiple times
- ⚠️ Environment: `SandboxLocal`, Config: `appsettings.SandboxLocal.json`
- ⚠️ Backups: `scripts/backups/SandboxLocal/`, Logs: `scripts/logs/`
- 📦 Keeps last 5 backups automatically