WIP reading news from app

server/src/newsreader.rs

@@ -0,0 +1,30 @@
+use std::hash::{DefaultHasher, Hash, Hasher};
+
+use log::info;
+use sqlx::postgres::PgPool;
+
+const TAG_PREFIX: &'static str = "News";
+
+use crate::{error, graphql::Tag};
+pub async fn tags(pool: &PgPool, needs_unread: bool) -> Result<Vec<Tag>, error::ServerError> {
+    // TODO: write separate query for needs_unread.
+    let tags = sqlx::query_file!("sql/tags.sql").fetch_all(pool).await?;
+    info!("sqlx tags {tags:#?}");
+    let tags = tags
+        .into_iter()
+        .map(|tag| {
+            let mut hasher = DefaultHasher::new();
+            tag.site.hash(&mut hasher);
+            let hex = format!("#{:06x}", hasher.finish() % (1 << 24));
+            let unread = tag.unread.unwrap_or(0).try_into().unwrap_or(0);
+            let name = format!("{TAG_PREFIX}/{}", tag.site.expect("tag must have site"));
+            Tag {
+                name,
+                fg_color: "white".to_string(),
+                bg_color: hex,
+                unread,
+            }
+        })
+        .collect();
+    Ok(tags)
+}