fix(blog::components::check_update) remove the use of deprecated api

backend/markdown/src/lib.rs

@@ -8,7 +8,7 @@ use crate::{
     utils::front_matter::{parse_front_matter, split_md_front_matter},
 };
 
-use base64::{engine::general_purpose, Engine};
+use base64::{Engine, engine::general_purpose};
 use serde::Serialize;
 use serde_json::Value;
 use sha2::{Digest, Sha256};

backend/server/Cargo.toml

@@ -12,7 +12,7 @@ tracing = { version = "0.1.41", features = ["log"] }
 git2 = "0.20.0"
 chrono = { version = "0.4.39", features = ["serde"] }
 cron = "0.15.0"
-sqlx = { version = "0.8.3", features = ["runtime-tokio", "tls-native-tls", "postgres", "chrono"] }
+sqlx = { version = "0.8.3", features = ["runtime-tokio", "tls-native-tls", "postgres", "chrono", "uuid"] }
 serde_json = "1.0.133"
 serde = { version = "1.0.215", features = ["derive"] }
 tracing-subscriber = "0.3.18"

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/api/get_post/mod.rs

@@ -7,28 +7,29 @@ use axum::{
 };
 use serde_json::json;
 use sqlx::PgPool;
+use uuid::Uuid;
 
-const GET_POST_BY_I64_ID: &str = include_str!("get_post_by_i64_id.sql");
+const GET_POST_BY_UUID: &str = include_str!("get_post_by_uuid.sql");
 const GET_POST_BY_STR_ID: &str = include_str!("get_post_by_str_id.sql");
 
 pub async fn handler(
     State(db_connection): State<PgPool>,
     Path(identifier): Path<String>,
 ) -> impl IntoResponse {
-    if let Ok(id) = identifier.parse::<i64>() {
+    if let Ok(id) = identifier.parse::<Uuid>() {
-        select_post_with_i64_id(&db_connection, id).await
+        select_post_by_uuid(&db_connection, id).await
     } else {
-        select_post_with_str_id(&db_connection, &identifier).await
+        select_post_by_str_id(&db_connection, &identifier).await
     };
     Json::from(json!({"res": "ok"})).into_response()
 }
 
-async fn select_post_with_i64_id(db: &PgPool, id: i64) {
+async fn select_post_by_uuid(db: &PgPool, id: Uuid) {
     dev_consume!(db, id);
     todo!()
 }
 
-async fn select_post_with_str_id(db: &PgPool, id: &str) {
+async fn select_post_by_str_id(db: &PgPool, id: &str) {
     dev_consume!(db, id);
     todo!()
 }

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

@@ -0,0 +1,181 @@
+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,
+};
+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
+        .into_iter()
+        .map(|change| match change {
+            Change::Delete(del) => handle_delete(db_conn, del).boxed(),
+            Change::Move(mv) => handle_move(db_conn, mv).boxed(),
+            Change::Update(update) => handle_update(db_conn, update).boxed(),
+            Change::Create(create) => handle_create(db_conn, create).boxed(),
+        })
+        .collect::<Vec<BoxFuture<'_, ()>>>();
+
+    join_all(handlers).await;
+}
+
+async fn handle_delete(db: &PgPool, del: Delete) {
+    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) {
+    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/error.rs

@@ -2,57 +2,17 @@ use markdown::error::Error as MarkdownError;
 
 use thiserror::Error;
 
-#[allow(dead_code)]
 #[derive(Error, Debug)]
 pub enum Error {
     #[error("markdown file error")]
     MdFile(#[from] MarkdownError),
 
-    #[error("missing essential field `{}` for file `{}`", field, filename)]
+    #[error("db error")]
-    MissingField { field: String, filename: String },
+    Db(#[from] sqlx::Error),
-
-    #[error(
-        "invalid field `{}` for file `{}`, <{}>: {}",
-        field_name,
-        filename,
-        err_field,
-        msg
-    )]
-    InvalidField {
-        field_name: String,
-        err_field: String,
-        filename: String,
-        msg: String,
-    },
-
-    #[error(
-        "database error on writing `{}` to table `{}`: <{}>: {}",
-        data_desc,
-        db_table,
-        id,
-        msg
-    )]
-    DBWriteFailure {
-        data_desc: String,
-        db_table: String,
-        id: String,
-        msg: String,
-    },
-
-    #[error(
-        "Database error on Reading `{}` from table `{}`: <{}>: {}",
-        data_desc,
-        db_table,
-        id,
-        msg
-    )]
-    DBReadFailure {
-        data_desc: String,
-        db_table: String,
-        id: String,
-        msg: String,
-    },
 
     #[error("git error")]
     Git2(#[from] git2::Error),
+
+    #[error("git remote url mismatch")]
+    GitUrlMismatch,
 }

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

@@ -6,16 +6,19 @@ 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 sqlx::PgPool;
-use tracing::{trace, warn, Level};
+use tracing::{log::error, trace, warn, Level};
 
 // mod error;
 // mod index;
+mod apply;
 mod changes;
 mod error;
 mod pull;
@@ -85,7 +88,10 @@ async fn workflow(args: Arc<Args>) {
     .await
     {
         Ok(updates) => updates,
-        Err(_) => return,
+        Err(e) => {
+            error!("delta parsing error: {}", e);
+            return;
+        }
     };
 
     if deltas.is_empty() {
@@ -93,5 +99,5 @@ async fn workflow(args: Arc<Args>) {
         return;
     }
 
-    // todo: load delta to database
+    apply_deltas(&args.db_connection, deltas).await;
 }

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

@@ -1,18 +1,16 @@
-use std::collections::HashMap;
+use std::{collections::HashMap, fs::remove_dir_all, path::PathBuf};
-use std::path::PathBuf;
 
 use crate::{
     modules::blog::components::check_update::{
-        changes::{Change, Create, Delete, Update},
+        changes::{Change, Create, CreateDelete2UpdateSlot, Delete, Update},
         error::Error,
     },
     utils::{git, git::FileDelta},
 };
 use markdown::MdFile;
 
-use crate::modules::blog::components::check_update::changes::CreateDelete2UpdateSlot;
 use git2::{Delta, Repository};
-use tracing::error;
+use tracing::{error, warn};
 use uuid::Uuid;
 
 pub async fn fetch_deltas(
@@ -32,7 +30,27 @@ pub async fn fetch_deltas(
         },
     };
 
-    let mut remote = repo.find_remote(git_remote_name)?;
+    let mut remote = match repo.find_remote(git_remote_name) {
+        Ok(remote) => remote,
+        Err(e) => {
+            remove_dir_all(git_work_dir).unwrap();
+            warn!(
+                "cannot find git remote ({}), reinitializing: {}",
+                git_remote_name, e
+            );
+            return Err(e.into());
+        }
+    };
+    if remote.url().is_some_and(|url| url != git_url) {
+        remove_dir_all(git_work_dir).unwrap();
+        warn!(
+            "git remote url mismatch (expected: {}, actual: {}), reinitializing",
+            git_url,
+            remote.url().unwrap()
+        );
+        return Err(Error::GitUrlMismatch);
+    }
+
     let fetched_commit = git::do_fetch(&repo, &[git_remote_branch], &mut remote)?;
     let commit_deltas = git::calculate_diff(
         &repo,
@@ -46,6 +64,8 @@ pub async fn fetch_deltas(
 
     // process deleted deltas before merging commit to prevent "file not found" os error
     for delta in commit_deltas.into_iter() {
+        // todo: limit scanning scope to post only OR extract merging logic to external component
+
         if delta.status == Delta::Deleted {
             let file_path = &git_work_dir.join(
                 delta
@@ -117,10 +137,7 @@ pub async fn fetch_deltas(
 
 fn extract_post_id(post: &MdFile) -> Option<Uuid> {
     match post.meta["uuid"].as_str() {
-        Some(id) => match Uuid::parse_str(id) {
+        Some(id) => Uuid::parse_str(id).ok(),
-            Ok(id) => Some(id),
-            Err(_) => None,
-        },
         None => None,
     }
 }

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::NaiveDate;
-use chrono::{DateTime, FixedOffset, ParseResult};
 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>> {
+pub fn parse_post_identifier(path: &Path) -> Option<String> {
-    DateTime::parse_from_str(format!("{}T120000", date_str).as_str(), DEFAULT_DATE_FORMAT)
+    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!(
+            NaiveDate::from_ymd_opt(2015, 1, 1),
+            parse_naive_date_str("2015-1-01")
+        );
+    }
 }

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

@@ -5,6 +5,7 @@ use crate::modules::blog::components::check_update;
 use crate::scheduler::tasks::async_basic::AsyncBasic;
 use crate::{
     modules::{
+        Module,
         blog::{
             api::{
                 get_page_count,
@@ -13,12 +14,11 @@ use crate::{
             },
             // cron::check_update,
         },
-        Module,
     },
     scheduler::tasks::CronTask,
 };
 
-use axum::{routing::get, Router};
+use axum::{Router, routing::get};
 use sqlx::PgPool;
 
 const MOUNT_POINT: &str = "/blog";

backend/server/src/modules/blog/schema.sql

@@ -12,30 +12,54 @@ CREATE TABLE categories
     description TEXT DEFAULT ''
 );
 
+CREATE TABLE post_status
+(
+    id   SERIAL PRIMARY KEY,
+    name VARCHAR(20) UNIQUE NOT NULL
+);
+
+INSERT INTO post_status (name)
+VALUES ('draft'),
+       ('published'),
+       ('planned'),
+       ('hidden');
+
 CREATE TABLE posts
 (
-    id             UUID UNIQUE                       NOT NULL,
+    id           UUID PRIMARY KEY,
     identifier   VARCHAR(100) UNIQUE                           NOT NULL,
     title        VARCHAR(255)                                  NOT NULL,
     subtitle     VARCHAR(255)                                  NOT NULL,
-    published_date DATE                              NOT NULL,
+    date_created DATE                                          NOT NULL,
-    last_update    DATE,
+    date_updated DATE,
+    status       INTEGER REFERENCES post_status (id) DEFAULT 1 NOT NULL,
     content      TEXT                                          NOT NULL,
-
+    category     INTEGER REFERENCES categories (id)            NOT NULL
-    category       SERIAL REFERENCES categories (id) NOT NULL
 );
 
 CREATE TABLE post_tag
 (
-    post UUID REFERENCES posts (id),
+    post UUID REFERENCES posts (id) ON DELETE CASCADE,
-    tag  SERIAL REFERENCES tags (id)
+    tag  INTEGER REFERENCES tags (id) ON DELETE CASCADE,
+
+    CONSTRAINT post_tag_pk PRIMARY KEY (post, tag)
 );
 
 CREATE TABLE metadata
 (
-    pid        UUID REFERENCES posts (id) NOT NULL,
+    pid        UUID REFERENCES posts (id) ON DELETE CASCADE NOT NULL,
     meta_key   VARCHAR(50)                                  NOT NULL,
     meta_value TEXT                                         NOT NULL,
 
-    CONSTRAINT meta_pk PRIMARY KEY (pid, meta_key)
+    CONSTRAINT metadata_pk PRIMARY KEY (pid, meta_key)
 );
+
+-- index
+CREATE INDEX idx_tags_name ON tags (name);
+CREATE INDEX idx_categories_name ON categories (name);
+CREATE INDEX idx_posts_identifier ON posts (identifier);
+CREATE INDEX idx_posts_status ON posts (status);
+CREATE INDEX idx_posts_category ON posts (category);
+CREATE INDEX idx_post_tag_post ON post_tag (post);
+CREATE INDEX idx_post_tag_tag ON post_tag (tag);
+CREATE INDEX idx_metadata_pid ON metadata (pid);

backend/server/src/utils/git.rs

@@ -3,12 +3,11 @@
 /// https://github.com/rust-lang/git2-rs/commit/f3b87baed1e33d6c2d94fe1fa6aa6503a071d837
 ///
 use git2::{
-    build, AnnotatedCommit, AutotagOption, Delta, FetchOptions, Reference, Remote, Repository,
+    AnnotatedCommit, AutotagOption, Delta, FetchOptions, Reference, Remote, Repository, build,
 };
 use std::path::PathBuf;
 use tracing::{error, warn};
 
-
 #[derive(Debug, Eq, PartialEq)]
 pub struct FileDelta {
     pub old_path: Option<PathBuf>,