proper readme with examples

Author: extrawurst

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LICENSE.md renamed to LICENSE-MIT

@@ -1,7 +1,5 @@
 MIT License
 
-Copyright (c) 2024 extrawurst
-
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
 in the Software without restriction, including without limitation the rights
@@ -18,4 +16,4 @@ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-SOFTWARE.
+SOFTWARE.

README.md

@@ -1,12 +1,20 @@
 # bevy_ios_iap
 
-[![crates.io](https://img.shields.io/crates/v/bevy_ios_iap.svg)](https://crates.io/crates/bevy_ios_iap)
-[![docs.rs](https://img.shields.io/docsrs/bevy_ios_iap)](https://docs.rs/bevy_ios_gamecenter/latest/bevy_ios_iap/)
+[![crates.io][sh_crates]][lk_crates]
+[![docs.rs][sh_docs]][lk_docs]
+[![discord][sh_discord]][lk_discord]
+
+[sh_crates]: https://img.shields.io/crates/v/bevy_ios_iap.svg
+[lk_crates]: https://crates.io/crates/bevy_ios_iap
+[sh_docs]: https://img.shields.io/docsrs/bevy_ios_iap
+[lk_docs]: https://docs.rs/bevy_ios_gamecenter/latest/bevy_ios_iap/
+[sh_discord]: https://img.shields.io/discord/1176858176897953872?label=discord&color=5561E6
+[lk_discord]: https://discord.gg/rQNeEnMhus
 
 Provides access to iOS native StoreKit2 Swift API from inside Bevy Apps.
 It uses [Swift-Bridge](https://github.com/chinedufn/swift-bridge) to auto-generate the glue code and transport datatypes.
 
-![demo](./demo.gif)
+![demo](./assets/demo.gif)
 
 See also [bevy_ios_gamecenter](https://github.com/rustunit/bevy_ios_gamecenter), [bevy_ios_notifications](https://github.com/rustunit/bevy_ios_notifications), [bevy_ios_alerts](https://github.com/rustunit/bevy_ios_alerts), [bevy_ios_review](https://github.com/rustunit/bevy_ios_review) & [bevy_ios_impact](https://github.com/rustunit/bevy_ios_impact)
 
@@ -20,21 +28,104 @@ See also [bevy_ios_gamecenter](https://github.com/rustunit/bevy_ios_gamecenter),
 * does not return locally un-signed/un-verified transactions
 
 ## Todo
-* forward transaction.id inside of successful purchase result to allow early finish
 * support subscription product type
 * remaining error handling in: `ios_iap_transactions_all` and `ios_iap_products`
 * allow access to signature for remote verification
 * support offers
 * support family sharing
 * transaction revocation reason
 
-## Swift-Bridge wishlist
-* how to return data from swift that rust can read? (`fn foo() -> Bar`)
-* make @_cdecl funcs `public` (https://github.com/chinedufn/swift-bridge/issues/166)
-* allow changing stuff to allow multiple libs using this approach (`SwiftBridgeCore.swift`, Name of `RustXcframework`, `Headers` subfolder etc.) see https://github.com/jessegrosjean/swift-cargo-problem
-* support derives(Clone,Debug) on shared enums
-* support calling async swift from rust
-* allow shared structs in `Vec`'s (Vectorizable)
-* properly add missing `import RustXcframework` when using Swift Package approach
-* add `swift_bridge_build.update_package` to only copy the files over instead of generating everything (and do the above)
-* how to get swift `Data` out? cannot figure out how to convert that into RustVec<UInt8> or anything compatible
+## Instructions
+
+1. Add to XCode: Add SPM (Swift Package Manager) dependency
+2. Add Rust dependency
+3. Setup Plugin
+
+### 1. Add to XCode
+
+* Add `StoreKit` framework:
+![gamekit](./assets/framework.png)
+
+* Go to `File` -> `Add Package Dependencies` and paste `https://github.com/rustunit/bevy_ios_iap.git` into the search bar on the top right:
+![xcode](./assets/xcode-spm.png)
+
+* Don't forget to configure your purchases like for any other iOS app, this guide will not focus on that, as it is the same no matter what engine you use. this guide focuses on setting things up in a bevy project.
+
+**Note:** 
+The rust crate used must be **exactly** the same version as the Swift Package (for binary compatibility reasons).
+I suggest using a specific version (like `0.2.0` in the screenshot) to make sure to always use binary matching versions!
+
+### 2. Add Rust dependency
+
+```
+cargo add bevy_ios_iap
+``` 
+
+or 
+
+```toml
+# always pin to the same exact version you also of the Swift package
+bevy_ios_iap = { version = "=0.2.0" }
+```
+
+### 3. Setup Plugin
+
+Initialize Bevy Plugin:
+
+```rust
+// request initialisation right on startup
+app.add_plugins(IosIapPlugin::new(true));
+```
+
+```rust
+fn bevy_system() {
+    // request product details, product IDs have to be explicitly provided
+    // this will lead to a response: `IosIapEvents::Products`
+    bevy_ios_iap::get_products(vec!["com.rustunit.zoolitaire.levelunlock".into()]);
+
+    // trigger a product purchase for a specific product ID
+    // this will lead to a response: `IosIapEvents::Purchase`
+    bevy_ios_iap::purchase("com.rustunit.zoolitaire.levelunlock".into());
+
+    // request to restore active subscriptions and non-consumables
+    // this will lead to a response: `IosIapEvents::CurrentEntitlements`
+    bevy_ios_iap::current_entitlements();
+
+    // marks a transaction as finished after the product was provided to the customer.
+    // if this is not called a transaction will keep being triggered automatically on 
+    // app start as iOS wants us to be sure we granted the user the purchased good.
+    // this will lead to a response: `IosIapEvents::TransactionFinished`
+    bevy_ios_iap::finish_transaction(42);
+}
+```
+
+Process Response Events from iOS back to us in Rust:
+
+```rust
+fn process_iap_events(
+    mut events: EventReader<IosIapEvents>,
+) {
+    for e in events.read() {
+        match e {
+            IosIapEvents::Products(_) => todo!(),
+            IosIapEvents::Purchase(_) => todo!(),
+            IosIapEvents::Transaction(_) => todo!(),
+            IosIapEvents::TransactionFinished(_) => todo!(),
+            IosIapEvents::AllTransactions(_) => todo!(),
+            IosIapEvents::CurrentEntitlements(_) => todo!(),
+        }
+    }
+}
+```
+
+# License
+
+All code in this repository is dual-licensed under either:
+
+- MIT License (LICENSE-MIT or http://opensource.org/licenses/MIT)
+- Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
+
+at your option. This means you can select the license you prefer.
+
+## Your contributions
+Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

SWIFT_BRIDGE.md

@@ -0,0 +1,11 @@
+# Swift-Bridge wishlist
+
+* how to return data from swift that rust can read? (`fn foo() -> Bar`)
+* make @_cdecl funcs `public` (https://github.com/chinedufn/swift-bridge/issues/166)
+* allow changing stuff to allow multiple libs using this approach (`SwiftBridgeCore.swift`, Name of `RustXcframework`, `Headers` subfolder etc.) see https://github.com/jessegrosjean/swift-cargo-problem
+* support derives(Clone,Debug) on shared enums
+* support calling async swift from rust
+* allow shared structs in `Vec`'s (Vectorizable)
+* properly add missing `import RustXcframework` when using Swift Package approach
+* add `swift_bridge_build.update_package` to only copy the files over instead of generating everything (and do the above)
+* how to get swift `Data` out? cannot figure out how to convert that into RustVec<UInt8> or anything compatible