feat(blog::components::check_update) impl handle_create()

backend/server/src/constants/time.rs

@@ -1,2 +1,3 @@
 pub const DEFAULT_TIME_FORMAT: &str = "%Y-%m-%dT%H:%M:%S%z";
-pub const DEFAULT_DATE_FORMAT: &str = "%Y-%m-%d%zT%H%M%S";
+
+pub const DEFAULT_NAIVE_DATE_FORMAT: &str = "%Y-%m-%d";

backend/server/src/modules/blog/components/check_update/apply.rs

@@ -1,12 +1,23 @@
-use crate::modules::blog::components::check_update::changes::{
-    Change, Create, Delete, Move, Update,
+use crate::modules::blog::components::check_update::{
+    changes::{Change, Create, Delete, Move, Update},
+    error::Error,
+    utils::{parse_naive_date_str, parse_post_identifier},
 };
+use macros::dev_consume;
 
 use futures::{
+    future::{join_all, BoxFuture},
     FutureExt,
-    future::{BoxFuture, join_all},
 };
-use sqlx::PgPool;
+use sqlx::{query, PgPool, Postgres, Row, Transaction};
+use tracing::error;
+
+const DELETE_POST_BY_ID: &str = include_str!("sql/delete_post_by_id.sql");
+const GET_TAG_ID: &str = include_str!("sql/get_tag_id.sql");
+const GET_CATEGORY_ID: &str = include_str!("sql/get_category_id.sql");
+const CREATE_RETURN_TAG_ID: &str = include_str!("sql/create_return_tag_id.sql");
+const CREATE_RETURN_CATEGORY_ID: &str = include_str!("sql/create_return_category_id.sql");
+const CREATE_POST: &str = include_str!("sql/create_post.sql");
 
 pub async fn apply_deltas(db_conn: &PgPool, changes: Vec<Change>) {
     let handlers = changes
@@ -23,17 +34,148 @@ pub async fn apply_deltas(db_conn: &PgPool, changes: Vec<Change>) {
 }
 
 async fn handle_delete(db: &PgPool, del: Delete) {
-    todo!()
+    if let Err(e) = query(DELETE_POST_BY_ID).bind(del.uuid).execute(db).await {
+        error!(
+            "failed to delete post: {}, {}",
+            del.uuid.to_string(),
+            e.to_string()
+        )
+    }
 }
 
 async fn handle_move(db: &PgPool, mv: Move) {
+    let identifier = parse_post_identifier(&mv.to).unwrap();
+
+    dev_consume!(db, mv, identifier);
     todo!()
 }
 
 async fn handle_update(db: &PgPool, update: Update) {
+    dev_consume!(db, update);
     todo!()
 }
 
 async fn handle_create(db: &PgPool, create: Create) {
-    todo!()
+    let mut tx = db.begin().await.unwrap();
+
+    let identifier = parse_post_identifier(&create.path).unwrap();
+
+    let tags_json = create.payload.meta["tags"].clone();
+    let tags: Vec<_> = if let Some(tags) = tags_json.as_array() {
+        tags.iter().filter_map(|tag| tag.as_str()).collect()
+    } else {
+        vec![]
+    };
+    let mut tag_ids = vec![];
+    for tag in tags {
+        match get_or_create_tag_id(&mut tx, tag).await {
+            Ok(tid) => tag_ids.push(tid),
+            Err(e) => {
+                error!("failed to fetch or create tag ({}): {}", tag, e);
+                return;
+            }
+        }
+    }
+
+    let category_json = create.payload.meta["category"].clone();
+    let category = category_json.as_str().unwrap_or("Uncategorized");
+    let category_id = match get_or_create_category_id(&mut tx, category).await {
+        Ok(id) => id,
+        Err(e) => {
+            error!(
+                "failed to fetch category id for post {}: {}",
+                &identifier, e
+            );
+            return;
+        }
+    };
+
+    let meta = create.payload.meta;
+    let post_id = create.uuid;
+    let post_identifier = &identifier;
+    let post_title = meta
+        .get("title")
+        .map(|t| t.as_str().unwrap())
+        .unwrap_or("Untitled");
+    let post_subtitle = meta
+        .get("sub_title")
+        .map(|t| t.as_str().unwrap())
+        .unwrap_or("");
+    let post_date_created = if let Some(Some(date)) = meta
+        .get("date")
+        .map(|d| parse_naive_date_str(d.as_str().unwrap_or("")))
+    {
+        date
+    } else {
+        error!("failed to parse `date` for post: {}", post_identifier);
+        return;
+    };
+    let post_date_updated = meta
+        .get("update")
+        .map(|d| parse_naive_date_str(d.as_str().unwrap_or("")))
+        .unwrap_or(None);
+    let post_status = meta.get("status").map(|v| v.as_str()).unwrap_or(None);
+    let post_content = create.payload.content;
+
+    if let Err(e) = query(CREATE_POST)
+        .bind(post_id)
+        .bind(post_identifier)
+        .bind(post_title)
+        .bind(post_subtitle)
+        .bind(post_date_created)
+        .bind(post_date_updated)
+        .bind(post_status)
+        .bind(post_content)
+        .bind(category_id)
+        .bind(tag_ids)
+        .execute(&mut *tx)
+        .await
+    {
+        error!("failed to insert post {}: {}", &identifier, e);
+        return;
+    }
+
+    tx.commit().await.unwrap();
+}
+
+async fn get_or_create_tag_id(
+    db: &mut Transaction<'_, Postgres>,
+    tag_name: &str,
+) -> Result<i32, Error> {
+    get_create_id(db, tag_name, GET_TAG_ID, CREATE_RETURN_TAG_ID).await
+}
+
+async fn get_or_create_category_id(
+    db: &mut Transaction<'_, Postgres>,
+    category_name: &str,
+) -> Result<i32, Error> {
+    get_create_id(
+        db,
+        category_name,
+        GET_CATEGORY_ID,
+        CREATE_RETURN_CATEGORY_ID,
+    )
+    .await
+}
+
+async fn get_create_id(
+    db: &mut Transaction<'_, Postgres>,
+    field_name: &str,
+    fetch_query: &str,
+    create_fetch_query: &str,
+) -> Result<i32, Error> {
+    if let Some(id) = query(fetch_query)
+        .bind(field_name)
+        .fetch_optional(&mut **db)
+        .await?
+    {
+        Ok(id.get("id"))
+    } else {
+        let id = query(create_fetch_query)
+            .bind(field_name)
+            .fetch_one(&mut **db)
+            .await?
+            .get("id");
+        Ok(id)
+    }
 }

backend/server/src/modules/blog/components/check_update/mod.rs

@@ -6,15 +6,15 @@ use std::{
 
 use crate::{
     constants::config::general::{default_value, var_name},
-    modules::blog::components::check_update::{pull::fetch_deltas, utils::expand_path},
+    modules::blog::components::check_update::{
+        apply::apply_deltas, pull::fetch_deltas, utils::expand_path,
+    },
     scheduler::task_func::AsyncTaskFunc,
 };
 use macros::panic_with_log;
 
-use crate::modules::blog::components::check_update::apply::apply_deltas;
 use sqlx::PgPool;
-use tracing::log::error;
-use tracing::{Level, trace, warn};
+use tracing::{log::error, trace, warn, Level};
 
 // mod error;
 // mod index;

backend/server/src/modules/blog/components/check_update/sql/create_post.sql

@@ -0,0 +1,7 @@
+INSERT INTO posts
+(id, identifier, title, subtitle, date_created, date_updated, status, content, category)
+VALUES ($1, $2, $3, $4, $5, $6, $7, $8, $9);
+
+INSERT INTO post_tag (post, tag)
+SELECT $1, tag
+FROM UNNEST($10) AS t(tag);

backend/server/src/modules/blog/components/check_update/sql/create_return_category_id.sql

@@ -0,0 +1,3 @@
+INSERT INTO categories(name)
+VALUES ($1)
+RETURNING id;

backend/server/src/modules/blog/components/check_update/sql/create_return_tag_id.sql

@@ -0,0 +1,3 @@
+INSERT INTO tags(name)
+VALUES ($1)
+RETURNING id;

backend/server/src/modules/blog/components/check_update/sql/get_category_id.sql

@@ -0,0 +1,3 @@
+SELECT id
+FROM categories
+WHERE name = $1;

backend/server/src/modules/blog/components/check_update/sql/get_tag_id.sql

@@ -0,0 +1,3 @@
+SELECT id
+FROM tags
+WHERE name = $1;

backend/server/src/modules/blog/components/check_update/utils.rs

@@ -1,10 +1,11 @@
+use std::path::Path;
+
 use crate::constants::{
     config::general::{default_value, var_name},
-    time::DEFAULT_DATE_FORMAT,
+    time::DEFAULT_NAIVE_DATE_FORMAT,
 };
 
-// use crate::modules::blog::components::check_update::index::index_file;
-use chrono::{DateTime, FixedOffset, ParseResult};
+use chrono::NaiveDate;
 use dirs::home_dir;
 use tracing::warn;
 
@@ -30,6 +31,28 @@ pub fn expand_path(path: String) -> String {
     }
 }
 
-pub fn parse_date(date_str: &str) -> ParseResult<DateTime<FixedOffset>> {
-    DateTime::parse_from_str(format!("{}T120000", date_str).as_str(), DEFAULT_DATE_FORMAT)
+pub fn parse_post_identifier(path: &Path) -> Option<String> {
+    if let Some(comp) = path.components().nth_back(1) {
+        comp.as_os_str().to_str().map(|s| s.to_string())
+    } else {
+        None
+    }
+}
+
+pub fn parse_naive_date_str(date_str: &str) -> Option<NaiveDate> {
+    NaiveDate::parse_from_str(date_str, DEFAULT_NAIVE_DATE_FORMAT).ok()
+}
+
+#[cfg(test)]
+mod tests {
+    use crate::modules::blog::components::check_update::utils::parse_naive_date_str;
+    use chrono::NaiveDate;
+
+    #[test]
+    fn test_parse_naive_date() {
+        assert_eq!(
+            Some(NaiveDate::from_ymd(2015, 1, 1)),
+            parse_naive_date_str("2015-1-01")
+        );
+    }
 }