# Prisma Reader

Reads Prisma schema files and extracts database schema information.

## Overview

The Prisma Reader parses `.prisma` schema files that define database models using Prisma's schema language and converts them into RelSpec's internal database model representation.

## Features

- Parses Prisma schema syntax
- Extracts models, fields, and relationships
- Supports Prisma attributes and directives
- Handles enums and composite types

## Usage

### Basic Example

```go
package main

import (
    "fmt"
    "git.warky.dev/wdevs/relspecgo/pkg/readers"
    "git.warky.dev/wdevs/relspecgo/pkg/readers/prisma"
)

func main() {
    options := &readers.ReaderOptions{
        FilePath: "/path/to/schema.prisma",
    }

    reader := prisma.NewReader(options)
    db, err := reader.ReadDatabase()
    if err != nil {
        panic(err)
    }

    fmt.Printf("Found %d schemas\n", len(db.Schemas))
}
```

### CLI Example

```bash
# Read Prisma schema and convert to JSON
relspec --input prisma --in-file schema.prisma --output json --out-file schema.json

# Convert Prisma to GORM models
relspec --input prisma --in-file schema.prisma --output gorm --out-file models.go
```

## Example Prisma Schema

```prisma
datasource db {
  provider = "postgresql"
  url      = env("DATABASE_URL")
}

generator client {
  provider = "prisma-client-js"
}

model User {
  id        Int      @id @default(autoincrement())
  username  String   @unique @db.VarChar(50)
  email     String   @db.VarChar(100)
  createdAt DateTime @default(now()) @map("created_at")

  posts Post[]

  @@map("users")
}

model Post {
  id      Int    @id @default(autoincrement())
  userId  Int    @map("user_id")
  title   String @db.VarChar(200)
  content String @db.Text

  user User @relation(fields: [userId], references: [id], onDelete: Cascade)

  @@map("posts")
}
```

## Supported Prisma Attributes

- `@id` - Primary key
- `@unique` - Unique constraint
- `@default` - Default value
- `@map` - Column name mapping
- `@@map` - Table name mapping
- `@relation` - Relationship definition
- `@db.*` - Database-specific type annotations

## Notes

- Extracts datasource provider information
- Supports `@@map` for custom table names
- Handles Prisma-specific types and converts them to standard SQL types