coffrify 0.2.0

Official Rust SDK for Coffrify — encrypted file transfer infrastructure.
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# Coffrify — Rust SDK

Official Rust SDK for [Coffrify](https://coffrify.com), encrypted file transfer infrastructure.

Built on `reqwest` (rustls), `hmac`, `sha2`, `serde_json`. Async (works with any Tokio runtime).

## Install

```toml
[dependencies]
coffrify = "0.1"
tokio    = { version = "1", features = ["full"] }
```

## Quickstart

```rust
use serde_json::json;

#[tokio::main]
async fn main() -> coffrify::Result<()> {
    let coffrify = coffrify::Client::new(std::env::var("COFFRIFY_API_KEY")?)?;

    let res: serde_json::Value = coffrify.create_transfer(&json!({
        "files": [{ "name": "report.pdf", "size": 1_240_000, "mime_type": "application/pdf" }],
        "expires_in_hours": 72,
        "max_downloads": 10,
        "password": "s3cret!",
    })).await?;

    println!("Share URL: {}", res["share_url"]);
    Ok(())
}
```

## Webhook signature verification (Axum example)

```rust
use axum::{routing::post, Router, extract::State, http::HeaderMap, body::Bytes};

async fn handler(headers: HeaderMap, body: Bytes) -> axum::http::StatusCode {
    let raw = std::str::from_utf8(&body).unwrap_or("");
    let sig = headers.get("X-Coffrify-Signature").and_then(|h| h.to_str().ok()).unwrap_or("");
    let secret = std::env::var("COFFRIFY_WEBHOOK_SECRET").unwrap();

    let v = coffrify::webhook::verify(raw, sig, &secret);
    if !v.valid { return axum::http::StatusCode::BAD_REQUEST; }
    // process v.event ...
    axum::http::StatusCode::OK
}
```

## License

MIT.