ggen-api 5.1.3

REST API layer for ggen monetization: marketplace, billing, and SaaS operations
Documentation 
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//! Marketplace operation handlers

use axum::{
    extract::{Path, Query, State},
    http::StatusCode,
    Json,
};
use serde_json::json;
use uuid::Uuid;

use crate::{
    error::{ApiError, ApiResult},
    models::{PackageResult, PaginatedResponse, PurchaseRequest, PurchaseResponse, SearchRequest},
    state::AppState,
};

/// Search for packages in the marketplace
pub async fn search_packages(
    State(state): State<AppState>,
    Query(req): Query<SearchRequest>,
) -> ApiResult<Json<PaginatedResponse<PackageResult>>> {
    // Validate request
    if req.query.is_empty() {
        return Err(ApiError::BadRequest("Query cannot be empty".to_string()));
    }

    // Default pagination
    let limit = req.limit.unwrap_or(20);
    let offset = req.offset.unwrap_or(0);

    // TODO: Execute search against marketplace
    // For now, return mock results
    let results = vec![
        PackageResult {
            id: Uuid::new_v4().to_string(),
            name: "api-client".to_string(),
            version: "1.0.0".to_string(),
            author: "example".to_string(),
            description: "REST API client generator".to_string(),
            downloads: 1250,
            price: Some(19.99),
            license: "MIT".to_string(),
            rating: 4.8,
        },
    ];

    Ok(Json(PaginatedResponse {
        data: results,
        total: 1,
        limit,
        offset,
    }))
}

/// Get package details
pub async fn get_package(
    State(_state): State<AppState>,
    Path(package_id): Path<String>,
) -> ApiResult<Json<PackageResult>> {
    // TODO: Fetch package from marketplace
    if package_id.is_empty() {
        return Err(ApiError::NotFound("Package not found".to_string()));
    }

    Ok(Json(PackageResult {
        id: package_id,
        name: "api-client".to_string(),
        version: "1.0.0".to_string(),
        author: "example".to_string(),
        description: "REST API client generator".to_string(),
        downloads: 1250,
        price: Some(19.99),
        license: "MIT".to_string(),
        rating: 4.8,
    }))
}

/// Purchase a package
pub async fn purchase_package(
    State(_state): State<AppState>,
    Json(req): Json<PurchaseRequest>,
) -> ApiResult<(StatusCode, Json<PurchaseResponse>)> {
    // Validate request
    if req.package_id.is_empty() {
        return Err(ApiError::BadRequest("Package ID required".to_string()));
    }

    let transaction_id = Uuid::new_v4().to_string();

    // TODO: Create Stripe payment session
    // TODO: Record purchase transaction
    // TODO: Update package download count

    Ok((
        StatusCode::CREATED,
        Json(PurchaseResponse {
            transaction_id: transaction_id.clone(),
            package_id: req.package_id,
            price: 19.99,
            status: "pending".to_string(),
            payment_url: Some(format!(
                "{}/checkout/{}",
                "https://stripe.com", transaction_id
            )),
        }),
    ))
}

/// Download a package (user must be authenticated and have access)
pub async fn download_package(
    State(_state): State<AppState>,
    Path((package_id, version)): Path<(String, String)>,
) -> ApiResult<Json<serde_json::Value>> {
    // TODO: Verify user ownership/access
    // TODO: Generate signed download URL
    // TODO: Record download event
    // TODO: Update metrics

    if package_id.is_empty() {
        return Err(ApiError::NotFound("Package not found".to_string()));
    }

    Ok(Json(json!({
        "download_url": format!("https://s3.example.com/{}/{}", package_id, version),
        "expires_in_secs": 3600,
    })))
}

/// List user's purchased packages
pub async fn list_purchases(
    State(_state): State<AppState>,
    Query(pagination): Query<serde_json::Value>,
) -> ApiResult<Json<PaginatedResponse<PackageResult>>> {
    // TODO: Get user from auth context
    // TODO: Fetch user's purchases from database
    // TODO: Join with package metadata

    Ok(Json(PaginatedResponse {
        data: vec![],
        total: 0,
        limit: 20,
        offset: 0,
    }))
}