# Atlas Complete Summary for TraceRTM

## Your Decision: "Overkill is fine"

You chose **Atlas** over Goose because you want the most powerful migration tool, even if it's more complex.

## What You Get

### 5 Complete Documentation Files (24.5 KB)

1. **ATLAS_IMPLEMENTATION_GUIDE.md** (3.9 KB)
   - Quick start in 15 minutes
   - 7 steps to get started
   - Integration with Go
   - Common commands

2. **ATLAS_SCHEMA_TEMPLATE.md** (5.9 KB)
   - Ready-to-use schema.hcl
   - All 6 tables (profiles, projects, items, links, agents, change_log)
   - All indexes and foreign keys
   - WorkOS integration
   - Copy and use immediately

3. **ATLAS_CONFIG_TEMPLATE.md** (5.0 KB)
   - Ready-to-use atlas.hcl
   - Local, staging, production, Supabase environments
   - Environment variables
   - Docker setup
   - Makefile integration

4. **ATLAS_STEP_BY_STEP.md** (4.9 KB)
   - 5 phases with detailed steps
   - Phase 1: Setup (5 min)
   - Phase 2: Local Testing (10 min)
   - Phase 3: Integration with Go (10 min)
   - Phase 4: Schema Changes (5 min)
   - Phase 5: Deployment (10 min)
   - Total: ~40 minutes

5. **ATLAS_ALTERNATIVE_GUIDE.md** (4.8 KB)
   - What is Atlas and how it works
   - Atlas advantages and disadvantages
   - Quick start with Atlas
   - Migration path: Goose → Atlas

## Quick Start (5 Minutes)

```bash
# 1. Install Atlas
go install ariga.io/atlas/cmd/atlas@latest

# 2. Create migrations directory
mkdir -p backend/migrations

# 3. Create schema.hcl
# Copy from ATLAS_SCHEMA_TEMPLATE.md

# 4. Create atlas.hcl
# Copy from ATLAS_CONFIG_TEMPLATE.md

# 5. Generate first migration
cd backend && atlas migrate diff --env local --name init

# 6. Apply migration
atlas migrate apply --env local

# 7. Check status
atlas migrate status --env local
```

## Atlas Advantages

✅ **Auto-Generate Migrations** - No manual SQL writing
✅ **Schema Drift Detection** - Detect differences between code and DB
✅ **Powerful CLI** - Lint, inspect, validate, apply
✅ **Works with sqlc** - Integrate with your workflow
✅ **Multi-Database Support** - PostgreSQL, MySQL, SQLite, etc.
✅ **Lint Migrations** - Detect destructive changes and data loss
✅ **Rollback Planning** - See what will be rolled back
✅ **Schema-as-Code** - Define schema in HCL, version control it

## Implementation Timeline

- **Phase 1: Setup** - 5 minutes
- **Phase 2: Local Testing** - 10 minutes
- **Phase 3: Integration with Go** - 10 minutes
- **Phase 4: Schema Changes** - 5 minutes
- **Phase 5: Deployment** - 10 minutes

**Total: ~40 minutes**

## Reading Order

1. **ATLAS_IMPLEMENTATION_GUIDE.md** (quick overview)
2. **ATLAS_STEP_BY_STEP.md** (detailed implementation)
3. **ATLAS_SCHEMA_TEMPLATE.md** (copy schema)
4. **ATLAS_CONFIG_TEMPLATE.md** (copy config)

## Common Workflows

### Adding a New Table
1. Edit schema.hcl - add table definition
2. Run: `atlas migrate diff --env local --name add_table_name`
3. Review migration
4. Run: `atlas migrate apply --env local`
5. Test
6. Deploy to staging/prod

### Adding a Column
1. Edit schema.hcl - add column to table
2. Run: `atlas migrate diff --env local --name add_column_name`
3. Review migration
4. Run: `atlas migrate apply --env local`
5. Test
6. Deploy to staging/prod

### Creating an Index
1. Edit schema.hcl - add index to table
2. Run: `atlas migrate diff --env local --name add_index_name`
3. Review migration
4. Run: `atlas migrate apply --env local`
5. Test
6. Deploy to staging/prod

## What's Included

✅ Complete schema.hcl with all tables
✅ Complete atlas.hcl with all environments
✅ Docker setup for local development
✅ Makefile integration
✅ Go integration code
✅ Environment variables setup
✅ Step-by-step implementation guide
✅ Common workflows
✅ Troubleshooting guide
✅ All commands reference

## Next Steps

1. Read ATLAS_IMPLEMENTATION_GUIDE.md
2. Read ATLAS_STEP_BY_STEP.md
3. Follow Phase 1: Setup (5 min)
4. Follow Phase 2: Local Testing (10 min)
5. Follow Phase 3: Integration with Go (10 min)
6. Follow Phase 4: Schema Changes (5 min)
7. Follow Phase 5: Deployment (10 min)

## Resources

- Atlas Docs: https://atlasgo.io/
- Atlas GitHub: https://github.com/ariga/atlas
- Schema HCL Reference: https://atlasgo.io/guides/ddl
- Migration Guide: https://atlasgo.io/guides/migration
- Configuration Reference: https://atlasgo.io/guides/config

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**Ready to implement? Start with ATLAS_IMPLEMENTATION_GUIDE.md!**

