Get books from DDB

rimutaka · Aug 23, 2024 · 2d81fcb · 2d81fcb
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diff --git a/build/asset-manifest.json b/build/asset-manifest.json
@@ -1,18 +1,18 @@
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+    "main.js": "./static/js/main.267c14ac.js",
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 }
diff --git a/build/index.html b/build/index.html
@@ -1 +1 @@
-<!doctype html><html lang="en"><head prefix="og: http://ogp.me/ns#"><meta charset="utf-8"/><meta http-equiv="x-ua-compatible" content="ie=edge"><meta name="referrer" content="no-referrer"/><meta name="theme-color" content="#ffffff"/><meta name="viewport" content="width=device-width,initial-scale=1"/><title>📖📚📚</title><meta name="description" content="A pocket assistant for keen readers: find more information about the book or the author online, borrow it from your local library, buy, sell or share."><meta property="og:title" content="Scan ISBN to record or share a book"/><meta property="og:description" content="A pocket assistant for keen readers: find more information about the book or the author online, borrow it from your local library, buy, sell or share."><meta property="og:site_name" content="Bookworm Food"><meta property="og:type" content="website"><meta property="og:url" content="https://bookwormfood.com"><meta property="og:image" itemprop="image" content="http://bookwormfood.com/img/og-image-400.png"/><meta property="og:image:secure_url" itemprop="image" content="https://bookwormfood.com/img/og-image-400.png"><meta property="og:image:width" content="400"><meta property="og:image:height" content="400"><meta name="twitter:card" content="summary"/><meta name="twitter:title" content="Scan ISBN to record or share a book"/><meta name="twitter:description" content="A pocket assistant for keen readers: find more information about the book or the author online, borrow it from your local library, buy, sell or share."/><meta name="twitter:image" content="https://bookwormfood.com/img/og-image-400.png"/><link rel="apple-touch-icon" sizes="180x180" href="/img/apple-touch-icon.png"/><link rel="icon" type="image/png" sizes="32x32" href="/img/favicon-32x32.png"><link rel="icon" type="image/png" sizes="16x16" href="/img/favicon-16x16.png"><link rel="preconnect" href="https://fonts.googleapis.com"><link rel="preconnect" href="https://fonts.gstatic.com" crossorigin><link href="https://fonts.googleapis.com/css2?family=Amatic+SC:wght@400;700&display=swap" rel="stylesheet"><link href="https://fonts.googleapis.com/css2?family=News+Cycle:wght@400;700&display=swap" rel="stylesheet"><script defer="defer" src="/static/js/main.3726aeb7.js"></script><link href="/static/css/main.71786728.css" rel="stylesheet"></head><body><noscript>You need to enable JavaScript to run this app.</noscript><div id="app"></div></body></html>
+<!doctype html><html lang="en"><head prefix="og: http://ogp.me/ns#"><meta charset="utf-8"/><meta http-equiv="x-ua-compatible" content="ie=edge"><meta name="referrer" content="no-referrer"/><meta name="theme-color" content="#ffffff"/><meta name="viewport" content="width=device-width,initial-scale=1"/><title>📖📚📚</title><meta name="description" content="A pocket assistant for keen readers: find more information about the book or the author online, borrow it from your local library, buy, sell or share."><meta property="og:title" content="Scan ISBN to record or share a book"/><meta property="og:description" content="A pocket assistant for keen readers: find more information about the book or the author online, borrow it from your local library, buy, sell or share."><meta property="og:site_name" content="Bookworm Food"><meta property="og:type" content="website"><meta property="og:url" content="https://bookwormfood.com"><meta property="og:image" itemprop="image" content="http://bookwormfood.com/img/og-image-400.png"/><meta property="og:image:secure_url" itemprop="image" content="https://bookwormfood.com/img/og-image-400.png"><meta property="og:image:width" content="400"><meta property="og:image:height" content="400"><meta name="twitter:card" content="summary"/><meta name="twitter:title" content="Scan ISBN to record or share a book"/><meta name="twitter:description" content="A pocket assistant for keen readers: find more information about the book or the author online, borrow it from your local library, buy, sell or share."/><meta name="twitter:image" content="https://bookwormfood.com/img/og-image-400.png"/><link rel="apple-touch-icon" sizes="180x180" href="/img/apple-touch-icon.png"/><link rel="icon" type="image/png" sizes="32x32" href="/img/favicon-32x32.png"><link rel="icon" type="image/png" sizes="16x16" href="/img/favicon-16x16.png"><link rel="preconnect" href="https://fonts.googleapis.com"><link rel="preconnect" href="https://fonts.gstatic.com" crossorigin><link href="https://fonts.googleapis.com/css2?family=Amatic+SC:wght@400;700&display=swap" rel="stylesheet"><link href="https://fonts.googleapis.com/css2?family=News+Cycle:wght@400;700&display=swap" rel="stylesheet"><script defer="defer" src="/static/js/main.267c14ac.js"></script><link href="/static/css/main.71786728.css" rel="stylesheet"></head><body><noscript>You need to enable JavaScript to run this app.</noscript><div id="app"></div></body></html>
diff --git a/build/static/js/main.3726aeb7.js → build/static/js/main.267c14ac.js b/build/static/js/main.3726aeb7.js → build/static/js/main.267c14ac.js
diff --git a/build/static/js/main.3726aeb7.js.LICENSE.txt → build/static/js/main.267c14ac.js.LICENSE.txt b/build/static/js/main.3726aeb7.js.LICENSE.txt → build/static/js/main.267c14ac.js.LICENSE.txt
diff --git a/build/static/js/main.267c14ac.js.map b/build/static/js/main.267c14ac.js.map
diff --git a/build/static/js/main.3726aeb7.js.map b/build/static/js/main.3726aeb7.js.map
diff --git a/build/static/media/isbn_mod_bg.4f74f3097d9ed7af09bd.wasm b/build/static/media/isbn_mod_bg.4f74f3097d9ed7af09bd.wasm
diff --git a/build/static/media/isbn_mod_bg.c7f2ea4a54633e615edd.wasm b/build/static/media/isbn_mod_bg.c7f2ea4a54633e615edd.wasm
diff --git a/build/sw.js b/build/sw.js
@@ -5,7 +5,7 @@ if ("function" === typeof importScripts) {
     self.addEventListener("install", event => {
       self.skipWaiting();
     });
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+    workbox.precaching.precacheAndRoute([{"revision":"87add44d5bbd6500366aa7acec73c075","url":"asset-manifest.json"},{"revision":"4020571efe44dc33d271798e6a18e0c1","url":"favicon.ico"},{"revision":"f98923403f5c78d689d56b18f947c520","url":"img/apple-touch-icon.png"},{"revision":"a62aa63bb4d0a3dd08820787bd7e118f","url":"img/favicon-16x16.png"},{"revision":"a5229a03fcfe584a3031846fe3c19ccf","url":"img/favicon-32x32.png"},{"revision":"37ff8dc0d50cd7705fc65fc84837c2aa","url":"img/og-image-400.png"},{"revision":"1b643c029cc2999f9b0cb13b4473d0e3","url":"index.html"},{"revision":"04e972588e780145b7edd5c11b0902e8","url":"static/css/main.71786728.css"},{"revision":"c3e099fec758fe0793909fffdd5f0280","url":"static/js/main.267c14ac.js"},{"revision":"3311ddb0ad85b9240262a753f5a667b7","url":"static/media/about.472d9c94914ce88e8d8f.svg"},{"revision":"8d00e8b89883db0a8a11d9f91b427d10","url":"static/media/borrow.f8356d8f6c1fc40fa23b.svg"},{"revision":"fb577b765b6c263191ff525af5f4f175","url":"static/media/buy.a0ebbd4b83f7c8afd5d9.svg"},{"revision":"88569f0509b3727aa58d086aa3e5889f","url":"static/media/isbn_mod_bg.c7f2ea4a54633e615edd.wasm"},{"revision":"24f2b115d3964c9f977462cdd38b066a","url":"wasm/koder.js"},{"revision":"6f11e7db4fe9aca82cac7150bfc33769","url":"wasm/zbar.js"},{"revision":"e8789bf03df9c2c85e9c59ab0a0cd0c6","url":"wasm/zbar.wasm"},{"revision":"bb1c649a95ffa80369254cc3e51b9a41","url":"wasmWorker.js"}]);
     workbox.routing.registerRoute(
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diff --git a/rust/lambdas/client-sync/src/book.rs b/rust/lambdas/client-sync/src/book.rs
@@ -1,20 +1,32 @@
+use std::str::FromStr;
+
 use crate::USER_BOOKS_TABLE_NAME;
 use anyhow::Error;
 use aws_sdk_dynamodb::{types::AttributeValue, Client};
-use bookwormfood_types::Book;
+use bookwormfood_types::{Book, Books, ReadStatus};
+use chrono::{DateTime, Utc};
 use tracing::info;
 
+const FIELD_UID: &str = "uid"; // used in a query
+const FIELD_ISBN: &str = "isbn";
+const FIELD_TITLE: &str = "title";
+const FIELD_AUTHORS: &str = "authors";
+const FIELD_UPDATED: &str = "updated";
+const FIELD_READ_STATUS: &str = "read_status";
+
+/// Save a book in the user_books table.
+/// Replaces existing records unconditionally.
 pub(crate) async fn save(book: &Book, client: &Client, uid: &str) -> Result<(), Error> {
     match client
         .put_item()
         .table_name(USER_BOOKS_TABLE_NAME)
-        .item("uid", AttributeValue::S(uid.to_string()))
-        .item("isbn", AttributeValue::N(book.isbn.clone()))
-        .item("title", attr_val_s(&book.title))
-        .item("authors", attr_val_ss(&book.authors))
-        .item("updated", AttributeValue::S(book.timestamp_update.to_rfc3339()))
+        .item(FIELD_UID, AttributeValue::S(uid.to_string()))
+        .item(FIELD_ISBN, AttributeValue::S(book.isbn.clone()))
+        .item(FIELD_TITLE, attr_val_s(&book.title))
+        .item(FIELD_AUTHORS, attr_val_ss(&book.authors))
+        .item(FIELD_UPDATED, AttributeValue::S(book.timestamp_update.to_rfc3339()))
         .item(
-            "read_status",
+            FIELD_READ_STATUS,
             book.read_status
                 .map_or_else(|| AttributeValue::Null(true), |v| AttributeValue::S(v.to_string())),
         )
@@ -32,12 +44,108 @@ pub(crate) async fn save(book: &Book, client: &Client, uid: &str) -> Result<(),
     }
 }
 
+/// Returns all book records for the given user.
+/// Returns an empty list if no records found.
+pub(crate) async fn get_by_user(client: &Client, uid: &str) -> Result<Books, Error> {
+    let books = match client
+        .query()
+        .table_name(USER_BOOKS_TABLE_NAME)
+        .key_condition_expression("#uid = :uid")
+        .expression_attribute_names("#uid", FIELD_UID)
+        .expression_attribute_values(":uid", AttributeValue::S(uid.to_string()))
+        .send()
+        .await
+    {
+        Ok(v) => match v.items {
+            // convert the items into books
+            Some(items) => {
+                let mut books = Vec::with_capacity(items.len());
+                // loop thru the records
+                for item in items {
+                    let mut book = Book {
+                        isbn: "".to_string(),
+                        title: None,
+                        authors: None,
+                        timestamp_update: DateTime::<Utc>::MIN_UTC,
+                        read_status: None,
+                        cover: None,
+                        timestamp_sync: None,
+                        volume_info: None,
+                    };
+
+                    // iterate through the list of attributes for the record
+                    // instead of looking them up by name
+                    for attr in item {
+                        match attr.0.as_str() {
+                            FIELD_ISBN => book.isbn = attr_to_string(attr.1),
+                            FIELD_TITLE => book.title = attr_to_option(attr.1),
+                            FIELD_AUTHORS => {
+                                book.authors = match attr.1 {
+                                    AttributeValue::Ss(v) => Some(v),
+                                    _ => None,
+                                }
+                            }
+                            FIELD_UPDATED => {
+                                book.timestamp_update = match DateTime::parse_from_rfc3339(&attr_to_string(attr.1)) {
+                                    Ok(v) => v.into(),
+                                    Err(_) => DateTime::<Utc>::MIN_UTC,
+                                }
+                            }
+                            FIELD_READ_STATUS => book.read_status = ReadStatus::from_str(&attr_to_string(attr.1)).ok(),
+                            _ => {}
+                        }
+                    }
+
+                    // skip the book if invalid
+                    if !book.is_valid_isbn() {
+                        info!("Invalid ISBN {} / {:?}", uid, book);
+                        continue;
+                    }
+
+                    books.push(book);
+                }
+
+                Books { books }
+            }
+            None => {
+                info!("No books found for user {}", uid);
+                Books { books: Vec::new() }
+            }
+        },
+        Err(e) => {
+            info!("Failed to get books for {}: {:?}", uid, e);
+            return Err(Error::msg("Failed to save book".to_string()));
+        }
+    };
+
+    info!("Returning {} books for {}", books.books.len(), uid);
+    Ok(books)
+}
+
+///Converts the value into an AttributeValue
 fn attr_val_s(v: &Option<String>) -> AttributeValue {
     v.as_ref()
         .map_or_else(|| AttributeValue::Null(true), |v| AttributeValue::S(v.clone()))
 }
 
+///Converts the value into an AttributeValue
 fn attr_val_ss(v: &Option<Vec<String>>) -> AttributeValue {
     v.as_ref()
         .map_or_else(|| AttributeValue::Null(true), |v| AttributeValue::Ss(v.clone()))
 }
+
+/// Converts the AttributeValue into a string
+fn attr_to_string(v: AttributeValue) -> String {
+    match v {
+        AttributeValue::S(v) => v,
+        _ => "".to_string(),
+    }
+}
+
+/// Converts the AttributeValue into an option-string
+fn attr_to_option(v: AttributeValue) -> Option<String> {
+    match v {
+        AttributeValue::S(v) => Some(v),
+        _ => None,
+    }
+}
diff --git a/rust/lambdas/client-sync/src/main.rs b/rust/lambdas/client-sync/src/main.rs
@@ -1,5 +1,5 @@
 use aws_lambda_events::{
-    http::{HeaderMap, HeaderValue},
+    http::{method::Method, HeaderMap, HeaderValue},
     lambda_function_urls::{LambdaFunctionUrlRequest, LambdaFunctionUrlResponse},
 };
 use aws_sdk_dynamodb::Client;
@@ -42,42 +42,76 @@ pub(crate) async fn my_handler(
         None => String::new(),
     };
 
-    info!("{:?}", event.payload.body);
-
-    // try to deser the body into a book
-    let book = match &event.payload.body {
-        Some(v) => match serde_json::from_str::<Book>(v) {
-            Ok(v) => v,
-            Err(e) => {
-                info!("Failed to parse payload: {:?}", e);
-                return handler_response(Some("Invalid payload. Expected DdbBook".to_string()), 400);
-            }
-        },
-        None => {
-            info!("Empty input");
-            return handler_response(Some("Missing payload. Expected DdbBook".to_string()), 400);
-        }
-    };
+    info!("Body: {:?}", event.payload.body);
 
     // info!("Auth: {authorization}");
     // info!("Headers: {:?}", event.payload.headers);
 
     // exit if no valid email is provided
     let email = match jwt::get_email(&authorization) {
-        Ok(v) => v,
+        Ok(v) => v.to_lowercase(),
         Err(e) => {
             info!("Unauthorized via JWT: {:?}", e);
             return handler_response(Some("Unauthorized via JWT".to_string()), 403);
         }
     };
     info!("Email: {:?}", email);
 
+    // decide on the action depending on the HTTP method
+    let method = match event.payload.request_context.http.method {
+        Some(v) => {
+            if let Ok(method) = Method::from_bytes(v.as_bytes()) {
+                method
+            } else {
+                info!("Invalid HTTP method: {v}");
+                return handler_response(Some("Invalid HTTP method".to_string()), 400);
+            }
+        }
+        None => {
+            info!("Missing HTTP method");
+            return handler_response(Some("Missing HTTP method. It's a bug.".to_string()), 400);
+        }
+    };
+
     // save the book to the database
     let client = Client::new(&aws_config::load_from_env().await);
 
-    match book::save(&book, &client, &email).await {
-        Ok(_) => handler_response(Some("Book saved".to_string()), 200),
-        Err(e) => handler_response(Some(e.to_string()), 400),
+    match method {
+        // save the book to the database
+        Method::POST => {
+            // try to deser the body into a book
+            let book = match &event.payload.body {
+                Some(v) => match serde_json::from_str::<Book>(v) {
+                    Ok(v) => v,
+                    Err(e) => {
+                        info!("Failed to parse payload: {:?}", e);
+                        return handler_response(Some("Invalid payload. Expected DdbBook".to_string()), 400);
+                    }
+                },
+                None => {
+                    info!("Empty input");
+                    return handler_response(Some("Missing payload. Expected DdbBook".to_string()), 400);
+                }
+            };
+
+            match book::save(&book, &client, &email).await {
+                Ok(_) => handler_response(None, 204),
+                Err(e) => handler_response(Some(e.to_string()), 400),
+            }
+        }
+        // return the list of all books
+        Method::GET => match book::get_by_user(&client, &email).await {
+            Ok(v) => match serde_json::to_string(&v) {
+                Ok(v) => handler_response(Some(v), 200),
+                Err(e) => {
+                    info!("Failed to serialize books for {email}: {:?}", e);
+                    handler_response(Some(e.to_string()), 400)
+                }
+            },
+            Err(e) => handler_response(Some(e.to_string()), 400),
+        },
+        // unsupported method
+        _ => handler_response(Some("Unsupported HTTP method".to_string()), 400),
     }
 }
 

diff --git a/rust/types/Cargo.toml b/rust/types/Cargo.toml
@@ -9,4 +9,5 @@ license = "GPL 3.0"
 [dependencies]
 wasm-bindgen = "0.2"
 serde = { workspace = true }
+serde_json = { workspace = true }
 chrono = { workspace = true }
diff --git a/rust/types/src/google.rs b/rust/types/src/google.rs
@@ -18,7 +18,7 @@ use serde::{Deserialize, Serialize};
 // }
 
 /// Part of GoogleBooks API response
-#[derive(Deserialize, Serialize, Debug, Default)]
+#[derive(Deserialize, Serialize, Debug, Default, Clone)]
 #[serde(rename_all = "camelCase")]
 pub struct ImageLinks {
     /// ~80 pixels wide
@@ -54,7 +54,7 @@ pub struct ImageLinks {
 // }
 
 /// Part of GoogleBooks API response
-#[derive(Deserialize, Serialize, Debug, Default)]
+#[derive(Deserialize, Serialize, Debug, Default, Clone)]
 #[serde(rename_all = "camelCase")]
 pub struct VolumeInfo {
     pub title: String,
@@ -73,7 +73,7 @@ pub struct VolumeInfo {
 }
 
 /// Part of GoogleBooks API response
-#[derive(Deserialize, Serialize, Debug)]
+#[derive(Deserialize, Serialize, Debug, Clone)]
 #[serde(rename_all = "camelCase")]
 pub struct Volume {
     pub id: String,
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