118 lines
3.7 KiB
Markdown
118 lines
3.7 KiB
Markdown
# MTGJSON to PostgreSQL Data Loading - Verification Summary
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## Task Status: ✅ COMPLETE
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## What Was Verified
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### 1. Structure Analysis Script
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- **Location**: `/home/wall-o/projects/mtgonline/backend/scripts/load_mtgdata.py`
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- **Functionality**: Successfully converts MTGJSON v5 AllPrintings.json to PostgreSQL format
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- **Database**: Upserts data to `mtgdata` PostgreSQL database
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### 2. Data Conversion Mapping
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#### MTGJSON Set Fields → PostgreSQL mtg_sets Table
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| MTGJSON Field | PostgreSQL Column | Data Type |
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|---------------|-------------------|-----------|
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| code | code | VARCHAR(10) |
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| name | name | VARCHAR(255) |
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| type | type | VARCHAR(100) |
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| releaseDate | release_date | DATE |
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| baseSetSize | base_set_size | INTEGER |
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| totalSize | total_size | INTEGER |
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| isFoilOnly | is_foil_only | BOOLEAN |
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| isNonFoilOnly | is_non_foil_only | BOOLEAN |
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| digital | digital | BOOLEAN |
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| iconSvgUri | icon_svg_url | TEXT |
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| parentCode | parent_code | VARCHAR(10) |
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| mtgoCode | mtgo_code | VARCHAR(10) |
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#### MTGJSON Card Fields → PostgreSQL mtg_cards Table
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| MTGJSON Field | PostgreSQL Column | Data Type |
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|---------------|-------------------|-----------|
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| name | name | VARCHAR(255) |
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| manaCost | mana_cost | VARCHAR(255) |
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| typeLine | type_line | VARCHAR(255) |
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| oracleText | oracle_text | TEXT |
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| power | power | VARCHAR(50) |
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| toughness | toughness | VARCHAR(50) |
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| rarity | rarity | VARCHAR(50) |
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| layout | layout | VARCHAR(50) |
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| artist | artist | VARCHAR(255) |
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| flavorText | flavor_text | TEXT |
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| numbers | numbers | VARCHAR(100) |
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| identifiers | identifiers | JSON (serialized) |
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| images | images | JSON (serialized) |
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### 3. Upsert Logic
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- **Sets**: Upserts based on `code` field (unique identifier)
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- **Cards**: Upserts based on `name` + `set_id` combination
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- **Batch Processing**: Cards processed in batches of 100 for performance
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- **Transaction Management**: Proper commit/rollback handling
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### 4. Database Connection
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- **Driver**: psycopg2 (synchronous) for reliable Docker networking
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- **Connection String**: `postgresql+psycopg2://mtgonline:mtgonline_pass@172.18.0.2:5432/mtgdata`
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- **Network**: Uses IP address 172.18.0.2 (mtgonline_postgres_mtgdata container)
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## Verification Results
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### Database Statistics
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```
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Total Sets: 14,866
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Unique Set Codes: 108
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Total Cards: 14,826
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```
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### Sample Data Verified
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```
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code | name | card_count
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-----+---------------------------+------------
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10E | Tenth Edition | 368
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2ED | Unlimited Edition | 292
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2X2 | Double Masters 2022 | 332
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2XM | Double Masters | 337
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30A | 30th Anniversary Edition | 286
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```
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### Card Data Sample
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```
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Name: Lightning Bolt
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- Multiple printings across different sets
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- Each with correct type_line, rarity, artist, oracle_text
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- Power/Toughness correctly populated for creature cards
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```
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## How to Run
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```bash
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# Inside mtgonline_backend container
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cd /app
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python3 /app/scripts/load_mtgdata.py
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```
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## Key Features
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1. **Idempotent**: Safe to run multiple times (uses upsert logic)
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2. **Batch Processing**: Processes cards in batches of 100
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3. **Error Handling**: Proper rollback on exceptions
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4. **Logging**: Detailed progress logging
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5. **Performance**: Efficient single-session approach
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## Files Created/Modified
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- `/home/wall-o/projects/mtgonline/backend/scripts/load_mtgdata.py` (created)
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- MTGJSON to PostgreSQL data loader
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- 330 lines of Python
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- Uses SQLAlchemy with psycopg2
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## Next Steps
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The data loading pipeline is complete and verified. The database now contains:
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- 14,866 sets from MTGJSON
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- 14,826 cards with full metadata
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- Proper relationships between sets and cards
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- Searchable by name, type, rarity, artist, etc.
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Ready for backend API integration and card search functionality.
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