From a7ae9cbc56d2a7d36443e6f7f8c51d90ae6fc214 Mon Sep 17 00:00:00 2001
From: Qrius <qrius@quirio.net>
Date: Thu, 26 Sep 2024 00:11:05 +0200
Subject: Auto pick sensible output extension

---
 src/skaldpress/error.rs |  1 +
 src/skaldpress/main.rs  | 25 +++++++++++++++++++------
 2 files changed, 20 insertions(+), 6 deletions(-)

diff --git a/src/skaldpress/error.rs b/src/skaldpress/error.rs
index ae769a5..4f16ffa 100644
--- a/src/skaldpress/error.rs
+++ b/src/skaldpress/error.rs
@@ -8,6 +8,7 @@ pub const SP_GEN_DEST_STRIP_PREFIX_ERROR: u8 = 4;
 pub const SP_COMPILE_FILE_EXTENSION_ERROR: u8 = 7;
 pub const SP_COMPILE_TEMPLATE_MACRO_PROCESS_ERROR: u8 = 9;
 pub const SP_COMPILE_FILE_MACRO_PROCESS_ERROR: u8 = 10;
+pub const SP_COMPILE_FILE_TEMPLATE_EXTENSION_ERROR: u8 = 11;
 
 #[derive(Debug)]
 pub enum SkaldpressError {
diff --git a/src/skaldpress/main.rs b/src/skaldpress/main.rs
index c1b2006..2aa1790 100644
--- a/src/skaldpress/main.rs
+++ b/src/skaldpress/main.rs
@@ -6,8 +6,9 @@ use skaldpress::macro_processor::MacroProcessor;
 use skaldpress::skaldpress::error::SkaldpressError;
 use skaldpress::skaldpress::error::{
     SP_COMPILE_FILE_EXTENSION_ERROR, SP_COMPILE_FILE_EXTENSION_ERROR_2,
-    SP_COMPILE_FILE_MACRO_PROCESS_ERROR, SP_COMPILE_FILE_TEMPLATE_READ_ERROR,
-    SP_COMPILE_TEMPLATE_MACRO_PROCESS_ERROR, SP_GEN_DEST_STRIP_PREFIX_ERROR,
+    SP_COMPILE_FILE_MACRO_PROCESS_ERROR, SP_COMPILE_FILE_TEMPLATE_EXTENSION_ERROR,
+    SP_COMPILE_FILE_TEMPLATE_READ_ERROR, SP_COMPILE_TEMPLATE_MACRO_PROCESS_ERROR,
+    SP_GEN_DEST_STRIP_PREFIX_ERROR,
 };
 use skaldpress::skaldpress::metadata_parser::extract_parse_yaml_metadata;
 use skaldpress::skaldpress::metadata_parser::YamlValue;
@@ -19,6 +20,7 @@ const BUILD_DIR: &str = "build/";
 struct CompiledFile {
     content: String,
     metadata: HashMap<String, YamlValue>,
+    extension: String,
 }
 
 /// Will attempt to compile a specific file, potentially storing some state about the file
@@ -60,13 +62,25 @@ fn compile_file(file_path: &Path) -> Result<CompiledFile, SkaldpressError> {
         return Ok(CompiledFile {
             content: file_content,
             metadata: map,
+            extension: String::from(extension.to_str().unwrap_or("")),
         });
     };
 
     let template_file = format!("{}{}", TEMPLATES_DIR, template);
     let template = fs::read_to_string(&template_file).map_err(|e| {
-        SkaldpressError::TemplateReadError(SP_COMPILE_FILE_TEMPLATE_READ_ERROR, e, template_file)
+        SkaldpressError::TemplateReadError(
+            SP_COMPILE_FILE_TEMPLATE_READ_ERROR,
+            e,
+            template_file.clone(),
+        )
     })?;
+    let template_extension =
+        Path::new(&template_file)
+            .extension()
+            .ok_or(SkaldpressError::PathOperationError(
+                SP_COMPILE_FILE_TEMPLATE_EXTENSION_ERROR,
+                None,
+            ))?;
 
     macro_processor.define_macro_string(String::from("CONTENT"), file_content);
     let content = macro_processor
@@ -75,6 +89,7 @@ fn compile_file(file_path: &Path) -> Result<CompiledFile, SkaldpressError> {
     Ok(CompiledFile {
         content,
         metadata: map,
+        extension: String::from(template_extension.to_str().unwrap_or("")),
     })
 }
 
@@ -93,9 +108,7 @@ fn compile_file_and_write(source_file_path: &Path) -> Result<(), Box<dyn std::er
         .join(source_file_path.strip_prefix(CONTENT_DIR).map_err(|e| {
             SkaldpressError::PathOperationError(SP_GEN_DEST_STRIP_PREFIX_ERROR, Some(Box::new(e)))
         })?)
-        .with_extension("html");
-    // Here we need to do something about the extension, read it from the metadata of the template,
-    // or the main file
+        .with_extension(cfile.extension);
 
     let dest_dir = &dest_file_path
         .parent()
-- 
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