From 1dc169d14b9a397b8de526be779c6baea9e4d569 Mon Sep 17 00:00:00 2001
From: Book Pauk <bookpauk@gmail.com>
Date: Thu, 24 Nov 2022 19:52:51 +0700
Subject: [PATCH] =?UTF-8?q?=D0=A0=D0=B0=D0=B1=D0=BE=D1=82=D0=B0=20=D0=BD?=
 =?UTF-8?q?=D0=B0=D0=B4=20opds?=
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---
 server/core/opds/SearchPage.js | 83 ++++++++++++++++++++++++++++++++++
 server/core/opds/index.js      |  3 ++
 2 files changed, 86 insertions(+)
 create mode 100644 server/core/opds/SearchPage.js

diff --git a/server/core/opds/SearchPage.js b/server/core/opds/SearchPage.js
new file mode 100644
index 0000000..239069d
--- /dev/null
+++ b/server/core/opds/SearchPage.js
@@ -0,0 +1,83 @@
+const BasePage = require('./BasePage');
+
+class SearchPage extends BasePage {
+    constructor(config) {
+        super(config);
+
+        this.id = 'search';
+        this.title = 'Поиск';
+    }
+
+    async body(req) {
+        const result = {};
+
+        const query = {
+            type: req.query.type || '',
+            term: req.query.term || '',
+            page: parseInt(req.query.page, 10) || 1,
+        };
+
+        let entry = [];
+        if (query.type) {
+            if (['author', 'series', 'title'].includes(query.type)) {
+                const from = query.type;
+                const page = query.page;
+
+                const limit = 100;
+                const offset = (page - 1)*limit;
+                const queryRes = await this.webWorker.search(from, {[from]: query.term, del: 0, offset, limit});
+
+                const found = queryRes.found;
+
+                for (let i = 0; i < found.length; i++) {
+                    if (i >= limit)
+                        break;
+
+                    const row = found[i];
+
+                    entry.push(
+                        this.makeEntry({
+                            id: row.id,
+                            title: row[from],
+                            link: this.navLink({href: `/${from}?${from}==${encodeURIComponent(row[from])}`}),
+                        }),
+                    );
+                }
+
+                if (queryRes.totalFound > offset + found.length) {
+                    entry.push(
+                        this.makeEntry({
+                            id: 'next_page',
+                            title: '[Следующая страница]',
+                            link: this.navLink({href: `/${this.id}?type=${from}&term=${encodeURIComponent(query.term)}&page=${page + 1}`}),
+                        }),
+                    );
+                }
+            }
+        } else {
+            //корневой раздел
+            entry = [
+                this.makeEntry({
+                    id: 'search_author',
+                    title: 'Поиск авторов',
+                    link: this.navLink({href: `/${this.id}?type=author&term=${encodeURIComponent(query.term)}`}),
+                }),
+                this.makeEntry({
+                    id: 'search_series',
+                    title: 'Поиск серий',
+                    link: this.navLink({href: `/${this.id}?type=series&term=${encodeURIComponent(query.term)}`}),
+                }),
+                this.makeEntry({
+                    id: 'search_title',
+                    title: 'Поиск книг',
+                    link: this.navLink({href: `/${this.id}?type=title&term=${encodeURIComponent(query.term)}`}),
+                }),
+            ]
+        }
+
+        result.entry = entry;
+        return this.makeBody(result, req);
+    }
+}
+
+module.exports = SearchPage;
\ No newline at end of file
diff --git a/server/core/opds/index.js b/server/core/opds/index.js
index 4816ae6..b5c85e1 100644
--- a/server/core/opds/index.js
+++ b/server/core/opds/index.js
@@ -6,6 +6,7 @@ const GenrePage = require('./GenrePage');
 const BookPage = require('./BookPage');
 
 const OpensearchPage = require('./OpensearchPage');
+const SearchPage = require('./SearchPage');
 
 module.exports = function(app, config) {
     const opdsRoot = '/opds';
@@ -19,6 +20,7 @@ module.exports = function(app, config) {
     const book = new BookPage(config);
 
     const opensearch = new OpensearchPage(config);
+    const search = new SearchPage(config);
 
     const routes = [
         ['', root],
@@ -30,6 +32,7 @@ module.exports = function(app, config) {
         ['/book', book],
 
         ['/opensearch', opensearch],
+        ['/search', search],
     ];
 
     const pages = new Map();