Refactor for rich errors, split user abort and genuine error

src/errors.rs

@@ -0,0 +1,77 @@
+use miette::Diagnostic;
+use thiserror::Error;
+
+#[derive(Error, Diagnostic, Debug)]
+pub enum BinstallError {
+    #[error("installation cancelled by user")]
+    #[diagnostic(code(binstall::user_abort))]
+    UserAbort,
+
+    #[error(transparent)]
+    #[diagnostic(code(binstall::io))]
+    Io(#[from] std::io::Error),
+
+    #[error(transparent)]
+    #[diagnostic(code(binstall::url_parse))]
+    UrlParse(#[from] url::ParseError),
+
+    #[error(transparent)]
+    #[diagnostic(code(binstall::reqwest))]
+    Reqwest(#[from] reqwest::Error),
+
+    #[error(transparent)]
+    #[diagnostic(code(binstall::template))]
+    Template(#[from] tinytemplate::error::Error),
+
+    #[error(transparent)]
+    #[diagnostic(code(binstall::unzip))]
+    Unzip(#[from] zip::result::ZipError),
+
+    #[error(transparent)]
+    #[diagnostic(code(binstall::cargo_manifest))]
+    CargoManifest(#[from] cargo_toml::Error),
+
+    #[error("crates.io api error fetching crate information for '{crate_name}': {err}")]
+    #[diagnostic(code(binstall::crates_io_api))]
+    CratesIoApi {
+        crate_name: String,
+        #[source]
+        err: crates_io_api::Error,
+    },
+
+    #[error("version string '{v}' is not semver: {err}")]
+    #[diagnostic(code(binstall::version::parse))]
+    VersionParse {
+        v: String,
+        #[source]
+        err: semver::Error,
+    },
+
+    #[error("version requirement '{req}' is not semver: {err}")]
+    #[diagnostic(code(binstall::version::requirement))]
+    VersionReq {
+        req: String,
+        #[source]
+        err: semver::Error,
+    },
+
+    #[error("no version matching requirement '{req}'")]
+    #[diagnostic(code(binstall::version::mismatch))]
+    VersionMismatch { req: semver::VersionReq },
+
+    #[error("no crate information available for '{crate_name}' version '{v}'")]
+    #[diagnostic(code(binstall::version::unavailable))]
+    VersionUnavailable {
+        crate_name: String,
+        v: semver::Version,
+    },
+
+    #[error("could not {method} {url}: {err}")]
+    #[diagnostic(code(binstall::http))]
+    Http {
+        method: reqwest::Method,
+        url: url::Url,
+        #[source]
+        err: reqwest::Error,
+    },
+}