From 68fa37d61babe8d990ace5f9cb5a7de81eb57ea0 Mon Sep 17 00:00:00 2001
From: Ruben Beltran del Rio <ruben@unlimited.pizza>
Date: Sun, 16 Apr 2023 14:44:48 +0200
Subject: Add gemini parsing

---
 src/file_handler/file_strategies/file.rs   |  2 +-
 src/file_handler/file_strategies/gemini.rs | 60 +++++++++++++++++++++++++++++-
 src/file_handler/file_strategies/layout.rs |  2 +-
 src/file_handler/mod.rs                    |  5 ++-
 4 files changed, 63 insertions(+), 6 deletions(-)

(limited to 'src/file_handler')

diff --git a/src/file_handler/file_strategies/file.rs b/src/file_handler/file_strategies/file.rs
index 42b87d5..8eafdaa 100644
--- a/src/file_handler/file_strategies/file.rs
+++ b/src/file_handler/file_strategies/file.rs
@@ -21,7 +21,7 @@ impl FileHandlerStrategy for Strategy {
         }
     }
 
-    fn handle(&self, source: &PathBuf, destination: &PathBuf, file: &File) {
+    fn handle(&self, source: &PathBuf, destination: &PathBuf, file: &File, _l: &String) {
         let relative_path = file.path.strip_prefix(&source).unwrap();
         let complete_destination = destination.join(relative_path);
         let destination_parent = complete_destination.parent().unwrap();
diff --git a/src/file_handler/file_strategies/gemini.rs b/src/file_handler/file_strategies/gemini.rs
index 2427422..04e2b6a 100644
--- a/src/file_handler/file_strategies/gemini.rs
+++ b/src/file_handler/file_strategies/gemini.rs
@@ -1,8 +1,29 @@
 pub struct Strategy {}
 
 use std::path::PathBuf;
+use std::io::Write;
+use std::fs::{create_dir_all, read_to_string, File as IOFile};
 
 use crate::file_handler::{File, FileType, FileHandlerStrategy};
+use crate::gemini_parser::parse;
+
+impl Strategy {
+    fn is_title(&self, line: &str) -> bool {
+        line.starts_with("--- title:")
+    }
+
+    fn is_description(&self, line: &str) -> bool {
+        line.starts_with("--- description:")
+    }
+
+    fn get_title<'a>(&self, line: &'a str) -> &'a str {
+        line.split_once("--- title:").unwrap().1
+    }
+
+    fn get_description<'a>(&self, line: &'a str) -> &'a str {
+        line.split_once("--- description:").unwrap().1
+    }
+}
 
 impl FileHandlerStrategy for Strategy {
     fn is(&self, path: &PathBuf) -> bool {
@@ -23,7 +44,42 @@ impl FileHandlerStrategy for Strategy {
         }
     }
 
-    fn handle(&self, source: &PathBuf, destination: &PathBuf, file: &File) {
-        println!("Should parse and copy {}", file.path.display())
+    fn handle(&self, source: &PathBuf, destination: &PathBuf, file: &File, layout: &String) {
+        let gemini_contents = read_to_string(&file.path).unwrap();
+
+        // Front matter extraction
+        let lines: Vec<&str> = gemini_contents.split("\n").collect();
+        let mut lines_found = 0;
+        let mut title = "";
+        let mut description = "";
+        for line in lines[..2].iter() {
+            if self.is_title(&line) {
+                title = self.get_title(&line).trim();
+                lines_found = lines_found + 1;
+                continue;
+            }
+            if self.is_description(&line) {
+                description = self.get_description(&line).trim();
+                lines_found = lines_found + 1;
+                continue;
+            }
+        }
+
+        let gemini_source = lines[lines_found..].join("\n");
+        let content_html = parse(&gemini_source[..]);
+
+        let generated_html = layout
+            .replace("{{ title }}", title)
+            .replace("{{ description }}", description)
+            .replace("{{ content }}", &content_html[..]);
+
+
+        let relative_path = file.path.strip_prefix(&source).unwrap();
+        let complete_destination = destination.join(relative_path);
+        let destination_parent = complete_destination.parent().unwrap();
+        create_dir_all(destination_parent).unwrap();
+
+        let mut destination_file = IOFile::create(&complete_destination).unwrap();
+        destination_file.write_all(generated_html.as_bytes()).unwrap();
     }
 }
diff --git a/src/file_handler/file_strategies/layout.rs b/src/file_handler/file_strategies/layout.rs
index 21ce9ba..793b460 100644
--- a/src/file_handler/file_strategies/layout.rs
+++ b/src/file_handler/file_strategies/layout.rs
@@ -22,5 +22,5 @@ impl FileHandlerStrategy for Strategy {
 
     // We don't implement handling for layout, as we assume there's only one
     // and it got handled before.
-    fn handle(&self, _s: &PathBuf, _d: &PathBuf, _f: &File) {}
+    fn handle(&self, _s: &PathBuf, _d: &PathBuf, _f: &File, _l: &String) {}
 }
diff --git a/src/file_handler/mod.rs b/src/file_handler/mod.rs
index 64224ee..a106c27 100644
--- a/src/file_handler/mod.rs
+++ b/src/file_handler/mod.rs
@@ -58,7 +58,8 @@ impl FileHandler {
     pub fn handle(&self, source: &PathBuf, destination: &PathBuf, file: &File) {
         for strategy in self.strategies.iter() {
             if strategy.can_handle(&file.file_type) {
-                return strategy.handle(source, destination, file);
+                let layout = self.layout.as_ref().unwrap();
+                return strategy.handle(source, destination, file, layout);
             }
         }
     }
@@ -68,7 +69,7 @@ pub trait FileHandlerStrategy {
     fn is(&self, path: &PathBuf) -> bool;
     fn identify(&self) -> FileType;
     fn can_handle(&self, file_type: &FileType) -> bool;
-    fn handle(&self, source: &PathBuf, destination: &PathBuf, file: &File);
+    fn handle(&self, source: &PathBuf, destination: &PathBuf, file: &File, layout: &String);
 }
 
 pub enum FileType {
-- 
cgit