Dump plugins by hash instead of id

The same exact plugins are often included in many different files/mods. Grouping by hash in the sql query will show all files and mods a plugin appears in. Previously, the last file that was processed would overwrite the plugin file and only that single file/mod would appear in the file.

Also adds an index on plugins.hash since I'm now querying directly on it.

migrations/20220312173403_add_plugin_hash_index.sql

@@ -0,0 +1 @@
+CREATE INDEX ON plugins (hash);

src/commands/dump_plugin_data.rs

@@ -10,7 +10,7 @@ fn format_radix(mut x: u64, radix: u32) -> String {
     let mut result = vec![];
     loop {
         let m = x % radix as u64;
-        x = x / radix as u64;
+        x /= radix as u64;
 
         // will panic if you use a bad radix (< 2 or > 36).
         result.push(std::char::from_digit(m as u32, radix).unwrap());
@@ -23,10 +23,10 @@ fn format_radix(mut x: u64, radix: u32) -> String {
 
 pub async fn dump_plugin_data(pool: &sqlx::Pool<sqlx::Postgres>, dir: &str) -> Result<()> {
     let page_size = 20;
-    let mut last_id = None;
+    let mut last_hash = None;
     loop {
         let plugins =
-            plugin::batched_get_with_data(&pool, page_size, last_id, "Skyrim.esm", 1).await?;
+            plugin::batched_get_by_hash_with_mods(pool, page_size, last_hash, "Skyrim.esm", 1).await?;
         if plugins.is_empty() {
             break;
         }
@@ -36,8 +36,8 @@ pub async fn dump_plugin_data(pool: &sqlx::Pool<sqlx::Postgres>, dir: &str) -> R
             let path = path.join(format!("{}.json", format_radix(plugin.hash as u64, 36)));
             let mut file = File::create(path)?;
             write!(file, "{}", serde_json::to_string(&plugin)?)?;
-            last_id = Some(plugin.id);
+            last_hash = Some(plugin.hash);
         }
     }
-    return Ok(());
+    Ok(())
 }

src/models/plugin.rs

@@ -38,23 +38,11 @@ pub struct UnsavedPlugin<'a> {
 }
 
 #[derive(Debug, Serialize, Deserialize, FromRow)]
-pub struct PluginWithData {
-    pub id: i32,
-    pub name: String,
+pub struct PluginsByHashWithMods {
     pub hash: i64,
-    pub file_id: i32,
-    pub mod_id: i32,
-    pub version: f64,
-    pub size: i64,
-    pub author: Option<String>,
-    pub description: Option<String>,
-    pub masters: Vec<String>,
-    pub file_name: String,
-    pub file_path: String,
-    pub updated_at: NaiveDateTime,
-    pub created_at: NaiveDateTime,
-    pub file: Option<serde_json::Value>,
-    pub r#mod: Option<serde_json::Value>,
+    pub plugins: Option<serde_json::Value>,
+    pub files: Option<serde_json::Value>,
+    pub mods: Option<serde_json::Value>,
     pub cells: Option<serde_json::Value>,
 }
 
@@ -90,36 +78,37 @@ pub async fn insert<'a>(
 }
 
 #[instrument(level = "debug", skip(pool))]
-pub async fn batched_get_with_data(
+pub async fn batched_get_by_hash_with_mods(
     pool: &sqlx::Pool<sqlx::Postgres>,
     page_size: i64,
-    last_id: Option<i32>,
+    last_hash: Option<i64>,
     master: &str,
     world_id: i32,
-) -> Result<Vec<PluginWithData>> {
-    let last_id = last_id.unwrap_or(0);
+) -> Result<Vec<PluginsByHashWithMods>> {
+    let last_hash = last_hash.unwrap_or(-9223372036854775808); // psql bigint min
     sqlx::query_as!(
-        PluginWithData,
+        PluginsByHashWithMods,
         "SELECT
-            plugins.*,
-            json_agg(DISTINCT files.*) as file,
-            json_agg(DISTINCT mods.*) as mod,
+            plugins.hash,
+            json_agg(DISTINCT plugins.*) as plugins,
+            json_agg(DISTINCT files.*) as files,
+            json_agg(DISTINCT mods.*) as mods,
             COALESCE(json_agg(DISTINCT jsonb_build_object('x', cells.x, 'y', cells.y)) FILTER (WHERE cells.x IS NOT NULL AND cells.y IS NOT NULL AND cells.master = $3 AND cells.world_id = $4), '[]') AS cells
         FROM plugins
         LEFT OUTER JOIN files ON files.id = plugins.file_id
         LEFT OUTER JOIN mods ON mods.id = files.mod_id
         LEFT OUTER JOIN plugin_cells ON plugin_cells.plugin_id = plugins.id
         LEFT OUTER JOIN cells ON cells.id = plugin_cells.cell_id
-        WHERE plugins.id > $2
-        GROUP BY plugins.id
-        ORDER BY plugins.id ASC
+        WHERE plugins.hash > $2
+        GROUP BY plugins.hash
+        ORDER BY plugins.hash ASC
         LIMIT $1",
         page_size,
-        last_id,
+        last_hash,
         master,
         world_id
     )
     .fetch_all(pool)
     .await
-    .context("Failed to batch get with data")
+    .context("Failed to batch get by hash with mods")
 }