fix(core): pull package info from tauri.conf.json if set (#1581)

* fix(core): pull package info from tauri.conf.json if set

* fix: codegen

Author: lucasfernog

.changes/package-info-config.md

@@ -0,0 +1,5 @@
+---
+"tauri": patch
+---
+
+The package info APIs now checks the `package` object on `tauri.conf.json`.

core/tauri-codegen/src/context.rs

@@ -50,14 +50,25 @@ pub fn context_codegen(data: ContextData) -> Result<TokenStream, EmbeddedAssetsE
     quote!(None)
   };
 
+  let package_name = if let Some(product_name) = &config.package.product_name {
+    quote!(#product_name.to_string())
+  } else {
+    quote!(env!("CARGO_PKG_NAME").to_string())
+  };
+  let package_version = if let Some(version) = &config.package.version {
+    quote!(#version.to_string())
+  } else {
+    quote!(env!("CARGO_PKG_VERSION").to_string())
+  };
+
   // double braces are purposeful to force the code into a block expression
   Ok(quote!(#root::Context {
     config: #config,
     assets: #assets,
     default_window_icon: #default_window_icon,
     package_info: #root::api::PackageInfo {
-        name: env!("CARGO_PKG_NAME"),
-        version: env!("CARGO_PKG_VERSION")
-    }
+      name: #package_name,
+      version: #package_version,
+    },
   }))
 }

core/tauri-utils/src/config.rs

@@ -382,10 +382,23 @@ impl Default for BuildConfig {
   }
 }
 
+/// The package configuration.
+#[derive(Debug, Default, PartialEq, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct PackageConfig {
+  /// App name.
+  pub product_name: Option<String>,
+  /// App version.
+  pub version: Option<String>,
+}
+
 /// The tauri.conf.json mapper.
 #[derive(Debug, PartialEq, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub struct Config {
+  /// Package settings.
+  #[serde(default)]
+  pub package: PackageConfig,
   /// The Tauri configuration.
   #[serde(default)]
   pub tauri: TauriConfig,
@@ -761,13 +774,23 @@ mod build {
     }
   }
 
+  impl ToTokens for PackageConfig {
+    fn to_tokens(&self, tokens: &mut TokenStream) {
+      let product_name = opt_str_lit(self.product_name.as_ref());
+      let version = opt_str_lit(self.version.as_ref());
+
+      literal_struct!(tokens, PackageConfig, product_name, version);
+    }
+  }
+
   impl ToTokens for Config {
     fn to_tokens(&self, tokens: &mut TokenStream) {
+      let package = &self.package;
       let tauri = &self.tauri;
       let build = &self.build;
       let plugins = &self.plugins;
 
-      literal_struct!(tokens, Config, tauri, build, plugins);
+      literal_struct!(tokens, Config, package, tauri, build, plugins);
     }
   }
 }

core/tauri/src/api/mod.rs

@@ -60,9 +60,9 @@ pub type Result<T> = std::result::Result<T, Error>;
 #[derive(Debug, Clone)]
 pub struct PackageInfo {
   /// App name.
-  pub name: &'static str,
+  pub name: String,
   /// App version.
-  pub version: &'static str,
+  pub version: String,
 }
 
 // Not public API

core/tauri/src/updater/mod.rs

@@ -403,7 +403,7 @@ pub(crate) async fn check_update_with_dialog<M: Params>(
   // check updates
   match self::core::builder()
     .urls(&endpoints[..])
-    .current_version(package_info.version)
+    .current_version(&package_info.version)
     .build()
     .await
   {
@@ -414,7 +414,7 @@ pub(crate) async fn check_update_with_dialog<M: Params>(
       if updater.should_update && updater_config.dialog {
         let body = updater.body.clone().unwrap_or_else(|| String::from(""));
         let dialog =
-          prompt_for_install(&updater.clone(), package_info.name, &body.clone(), pubkey).await;
+          prompt_for_install(&updater.clone(), &package_info.name, &body.clone(), pubkey).await;
 
         if dialog.is_err() {
           send_status_update(
@@ -468,7 +468,7 @@ pub(crate) fn listener<M: Params>(
 
         match self::core::builder()
           .urls(&endpoints[..])
-          .current_version(package_info.version)
+          .current_version(&package_info.version)
           .build()
           .await
         {