Add quilt validators, Deps fix, Fix slug collisions (#338)

src/validate/quilt.rs

@@ -0,0 +1,50 @@
+use crate::validate::{
+    SupportedGameVersions, ValidationError, ValidationResult,
+};
+use std::io::Cursor;
+use time::OffsetDateTime;
+use zip::ZipArchive;
+
+pub struct QuiltValidator;
+
+impl super::Validator for QuiltValidator {
+    fn get_file_extensions(&self) -> &[&str] {
+        &["jar", "zip"]
+    }
+
+    fn get_project_types(&self) -> &[&str] {
+        &["mod"]
+    }
+
+    fn get_supported_loaders(&self) -> &[&str] {
+        &["fabric"]
+    }
+
+    fn get_supported_game_versions(&self) -> SupportedGameVersions {
+        // Time since release of 18w49a, the first fabric version
+        SupportedGameVersions::PastDate(OffsetDateTime::from_unix_timestamp(
+            1646070100,
+        ))
+    }
+
+    fn validate(
+        &self,
+        archive: &mut ZipArchive<Cursor<bytes::Bytes>>,
+    ) -> Result<ValidationResult, ValidationError> {
+        archive.by_name("quilt.mod.json").map_err(|_| {
+            ValidationError::InvalidInput(
+                "No quilt.mod.json present for Quilt file.".into(),
+            )
+        })?;
+
+        if !archive.file_names().any(|name| {
+            name.ends_with("refmap.json") || name.ends_with(".class")
+        }) {
+            return Ok(ValidationResult::Warning(
+                "Quilt mod file is a source file!",
+            ));
+        }
+
+        Ok(ValidationResult::Pass)
+    }
+}