Improve peformance of search indexing, v2 fixes + new routes (#205)

* Refactor search to not spam the database with queries, new utility routes for V2

* Run prepare

src/validate/fabric.rs

@@ -30,7 +30,11 @@ impl super::Validator for FabricValidator {
         &self,
         archive: &mut ZipArchive<Cursor<&[u8]>>,
     ) -> Result<ValidationResult, ValidationError> {
-        archive.by_name("fabric.mod.json")?;
+        archive.by_name("fabric.mod.json").map_err(|_| {
+            ValidationError::InvalidInputError(
+                "No fabric.mod.json present for Fabric file.".to_string(),
+            )
+        })?;
 
         if !archive
             .file_names()

src/validate/forge.rs

@@ -30,7 +30,9 @@ impl super::Validator for ForgeValidator {
         &self,
         archive: &mut ZipArchive<Cursor<&[u8]>>,
     ) -> Result<ValidationResult, ValidationError> {
-        archive.by_name("META-INF/mods.toml")?;
+        archive.by_name("META-INF/mods.toml").map_err(|_| {
+            ValidationError::InvalidInputError("No mods.toml present for Forge file.".to_string())
+        })?;
 
         if !archive.file_names().any(|name| name.ends_with(".class")) {
             return Ok(ValidationResult::Warning(
@@ -71,7 +73,9 @@ impl super::Validator for LegacyForgeValidator {
         &self,
         archive: &mut ZipArchive<Cursor<&[u8]>>,
     ) -> Result<ValidationResult, ValidationError> {
-        archive.by_name("mcmod.info")?;
+        archive.by_name("mcmod.info").map_err(|_| {
+            ValidationError::InvalidInputError("No mcmod.info present for Forge file.".to_string())
+        })?;
 
         if !archive.file_names().any(|name| name.ends_with(".class")) {
             return Ok(ValidationResult::Warning(

src/validate/pack.rs

@@ -78,7 +78,9 @@ impl super::Validator for PackValidator {
         &self,
         archive: &mut ZipArchive<Cursor<&[u8]>>,
     ) -> Result<ValidationResult, ValidationError> {
-        let mut file = archive.by_name("index.json")?;
+        let mut file = archive.by_name("index.json").map_err(|_| {
+            ValidationError::InvalidInputError("Pack manifest is missing.".to_string())
+        })?;
 
         let mut contents = String::new();
         file.read_to_string(&mut contents)?;