From 4f09373df3d4a2a9ec6a6f89d14f71a4dfad7bb5 Mon Sep 17 00:00:00 2001
From: Michal Vanko <mklakakilli@gmail.com>
Date: Wed, 2 Oct 2024 10:24:24 +0200
Subject: [PATCH] copy og tag images

---
 justfile                                      |  1 +
 src/picture_generator/image_src_generator.rs  | 63 +++++++++++++++++++
 src/picture_generator/mod.rs                  |  1 +
 .../picture_markup_generator.rs               |  6 +-
 templates/blog_post.html                      |  3 +-
 5 files changed, 70 insertions(+), 4 deletions(-)
 create mode 100644 src/picture_generator/image_src_generator.rs

diff --git a/justfile b/justfile
index e1852cb..500c042 100644
--- a/justfile
+++ b/justfile
@@ -52,6 +52,7 @@ clean:
 # SSG
 ssg:
 	- wget --no-convert-links -r -p -E -P dist --no-host-directories 127.0.0.1:{{port}}
+	find generated_images/ -name "*_og*" -exec cp --parents {} dist/ \;
   
 # Preview server
 preview:
diff --git a/src/picture_generator/image_src_generator.rs b/src/picture_generator/image_src_generator.rs
new file mode 100644
index 0000000..f289da7
--- /dev/null
+++ b/src/picture_generator/image_src_generator.rs
@@ -0,0 +1,63 @@
+use std::{path::Path, sync::Arc};
+
+use anyhow::Context;
+use image::ImageReader;
+use tracing::debug;
+
+use super::{
+    image_generator::generate_images,
+    picture_markup_generator::{get_export_formats, get_generated_file_name, get_image_path},
+};
+
+pub fn generate_image_with_src(
+    orig_img_path: &str,
+    width: u32,
+    height: u32,
+    suffix: &str,
+    generate_image: bool,
+) -> Result<String, anyhow::Error> {
+    let path_to_generated = get_generated_file_name(orig_img_path);
+    let file_stem = path_to_generated.file_stem().unwrap().to_str().unwrap();
+    let path_to_generated = path_to_generated.with_file_name(format!("{file_stem}{suffix}"));
+
+    let disk_img_path =
+        Path::new("static/").join(orig_img_path.strip_prefix("/").unwrap_or(orig_img_path));
+    let resolutions = [(width, height, 1.)];
+
+    let exported_formats = get_export_formats(orig_img_path);
+    let exported_format = *exported_formats.first().unwrap();
+
+    let path_to_generated_arc = Arc::new(path_to_generated);
+    let path_to_generated_clone = Arc::clone(&path_to_generated_arc);
+
+    if generate_image {
+        rayon::spawn(move || {
+            let orig_img = ImageReader::open(&disk_img_path)
+                .with_context(|| format!("Failed to read instrs from {:?}", &disk_img_path))
+                .unwrap()
+                .decode()
+                .unwrap();
+            let path_to_generated = path_to_generated_clone.as_ref();
+
+            let result = generate_images(
+                &orig_img,
+                path_to_generated,
+                &resolutions,
+                &[exported_format],
+            )
+            .with_context(|| "Failed to generate images".to_string());
+            if let Err(e) = result {
+                tracing::error!("Error: {}", e);
+            }
+        });
+    }
+    let path_to_generated = Arc::clone(&path_to_generated_arc);
+
+    let image_path = get_image_path(
+        &path_to_generated,
+        resolutions.first().expect("Should this error ever happen?"),
+        &exported_format,
+    );
+
+    Ok(image_path)
+}
diff --git a/src/picture_generator/mod.rs b/src/picture_generator/mod.rs
index 6b06bf2..f8109a9 100644
--- a/src/picture_generator/mod.rs
+++ b/src/picture_generator/mod.rs
@@ -23,5 +23,6 @@ It should be used from the templates as well
 
 pub mod export_format;
 pub mod image_generator;
+pub mod image_src_generator;
 pub mod picture_markup_generator;
 pub mod resolutions;
diff --git a/src/picture_generator/picture_markup_generator.rs b/src/picture_generator/picture_markup_generator.rs
index 7ce8a44..1501d26 100644
--- a/src/picture_generator/picture_markup_generator.rs
+++ b/src/picture_generator/picture_markup_generator.rs
@@ -119,7 +119,7 @@ pub fn generate_picture_markup(
     Ok(result)
 }
 
-fn get_image_path(path: &Path, resolution: &(u32, u32, f32), format: &ExportFormat) -> String {
+pub fn get_image_path(path: &Path, resolution: &(u32, u32, f32), format: &ExportFormat) -> String {
     let path_name = path.to_str().expect("Image has to have a valid path");
     let (width, height, _) = resolution;
     let extension = format.get_extension();
@@ -197,7 +197,7 @@ fn strip_prefixes(path: &Path) -> &Path {
     parent_path
 }
 
-fn get_generated_file_name(orig_img_path: &str) -> PathBuf {
+pub fn get_generated_file_name(orig_img_path: &str) -> PathBuf {
     let path = Path::new(&orig_img_path);
     // let parent = path
     //     .parent()
@@ -247,7 +247,7 @@ fn generate_srcset(path: &Path, format: &ExportFormat, resolutions: &[(u32, u32,
         .join(", ")
 }
 
-fn get_export_formats(orig_img_path: &str) -> Vec<ExportFormat> {
+pub fn get_export_formats(orig_img_path: &str) -> Vec<ExportFormat> {
     let path = Path::new(&orig_img_path)
         .extension()
         .and_then(|ext| ext.to_str());
diff --git a/templates/blog_post.html b/templates/blog_post.html
index 6b405aa..c91cfa3 100644
--- a/templates/blog_post.html
+++ b/templates/blog_post.html
@@ -6,7 +6,8 @@
 <meta property="og:url" content="https://michalvanko.dev/blog/{{slug}}" />
 {% match thumbnail %}
 {% when Some with (img) %}
-<meta property="og:image" content="https://michalvanko.dev{{img}}" />
+{% let src = crate::picture_generator::image_src_generator::generate_image_with_src(img, 1200, 630, "_og", true).unwrap_or("thumbnail not found".to_string())|safe %}
+<meta property="og:image" content="https://michalvanko.dev{{src}}" />
 {% when None %}
 <meta property="og:image" content="https://michalvanko.dev/images/m-logo.svg" />
 {% endmatch %}