+++ /dev/null
-/*
- * This file is part of WolneLektury-Mobile, licensed under GNU Affero GPLv3 or later.
- * Copyright © Fundacja Nowoczesna Polska. See NOTICE for more information.
- */
-
-var DB_VER = '0.9.15';
-
-var WL_INITIAL = WL + '/media/api/mobile/initial/initial.db';
-var WL_UPDATE = WL + '/api/changes/SINCE.json?book_fields=author,html,parent,parent_number,sort_key,title' +
- '&tag_fields=books,category,name,sort_key' +
- '&tag_categories=author,epoch,genre,kind';
-
-
-
-var categories = {'author': 'autor',
- 'epoch': 'epoka',
- 'genre': 'gatunek',
- 'kind': 'rodzaj',
- 'theme': 'motyw'
- }
-
-// FIXME: htmlescape strings!
-
-
-// for preparing sql statements
-// use like:
-// var s = new Sql("INSERT ... '{0}', '{1}' ...";
-// s.prepare("abc", ...)
-var Sql = function(scheme) {
- var self = this;
- self.text = scheme;
-
- self.sql_escape = function(term) {
- return term.toString().replace("'", "''");
- };
-
- self.prepare = function() {
- var args = arguments;
- return self.text.replace(/{(\d+)}/g, function(match, number) {
- return self.sql_escape(args[parseInt(number)]);
- });
- }
-};
-
-
-var Catalogue = new function() {
- /* API for database */
-
- var self = this;
- self.db = null;
-
- this.init = function(success, error) {
- console.log('Catalogue.init');
-
- self.updateDB(function() {
- self.db = window.openDatabase("wolnelektury", "1.0", "WL Catalogue", 1);
- if (self.db) {
- /*var regexp = {
- onFunctionCall: function(val) {
- var re = new RegExp(val.getString(0));
- if (val.getString(1).match(re))
- return 1;
- else
- return 0;
- }
- };
- self.db.createFunction("REGEXP", 2, regexp);*/
-
- success && success();
- } else {
- error && error('Nie mogę otworzyć bazy danych: ' + err);
- }
-
- }, function(err) {
- error && error('Błąd migracji: ' + err);
- });
- };
-
- self.sqlSanitize = function(term) {
- return term.toString().replace("'", "''");
- };
-
-
- /* check if DB needs updating and upload a fresh copy, if so */
- this.updateDB = function(success, error) {
- var has_ver = window.localStorage.getItem('db_ver');
- if (has_ver == DB_VER) {
- console.log('db ok, skipping')
- success && success();
- return;
- }
-
- var done = function() {
- FileRepo.clear();
- window.localStorage.setItem('db_ver', DB_VER);
- console.log('db updated');
- success && success();
- };
-
- // db initialize
- // this is Android-specific for now
- self.upload_db_android(done, error);
- };
-
-
- this.upload_db_android = function(success, error) {
- console.log('upload db for Android 2.x+');
-
- var dbname = "wolnelektury";
- var db = window.openDatabase(dbname, "1.0", "WL Catalogue", 500000);
- if (db) {
- console.log('db created successfully');
- DBPut.fetch(WL_INITIAL, function(data) {
- console.log('db fetch successful');
- success && success();
- }, function(data) {
- error && error('Błąd podczas pobierania bazy danych: ' + data);
- });
- } else {
- error && error('Błąd podczas inicjowania bazy danych: ' + data);
- }
- };
-
-
- this.withState = function(callback) {
- self.db.transaction(function(tx) {
- tx.executeSql("SELECT * FROM state", [],
- function(tx, results) {
- if (results.rows.length) {
- callback(results.rows.item(0));
- }
- else {
- callback({last_checked: 0});
- }
- });
- });
- };
-
-
- this.withBook = function(id, callback, error) {
- console.log('withBook '+id)
- self.db.transaction(function(tx) {
- tx.executeSql("SELECT * FROM book WHERE id="+id, [],
- function(tx, results) {
- if (results.rows.length) {
- callback(results.rows.item(0));
- }
- else {
- error && error();
- }
- });
- });
- };
-
- this.withBooks = function(ids, callback) {
- console.log('withBooks ' + ids)
- self.db.transaction(function(tx) {
- tx.executeSql("SELECT * FROM book WHERE id IN ("+ids+") ORDER BY sort_key", [],
- function(tx, results) {
- var items = [];
- var count = results.rows.length;
- for (var i=0; i<count; ++i) {
- items.push(results.rows.item(i));
- }
- callback(items);
- });
- });
- };
-
-
- this.withChildren = function(id, callback) {
- console.log('withChildren ' + id)
- self.db.transaction(function(tx) {
- tx.executeSql("SELECT * FROM book WHERE parent="+id+" ORDER BY parent_number, sort_key", [],
- function(tx, results) {
- var books = [];
- var count = results.rows.length;
- for (var i=0; i<count; ++i) {
- books.push(results.rows.item(i));
- }
- callback(books);
- });
- });
- };
-
- this.withTag = function(id, callback, error) {
- console.log('withTag '+id)
- self.db.transaction(function(tx) {
- tx.executeSql("SELECT * FROM tag WHERE id="+id, [],
- function(tx, results) {
- if (results.rows.length) {
- callback(results.rows.item(0));
- }
- else {
- error && error();
- }
- });
- });
- };
-
- this.withCategory = function(category, callback) {
- console.log('withCategory ' + category)
- self.db.transaction(function(tx) {
- tx.executeSql("SELECT * FROM tag WHERE category='"+category+"' ORDER BY sort_key", [],
- function(tx, results) {
- var items = [];
- var count = results.rows.length;
- for (var i=0; i<count; ++i)
- items.push(results.rows.item(i));
- callback(items);
- });
- });
- };
-
-
- /* takes a query, returns a list of {view,id,label} objects to a callback */
- this.withSearch = function(term, callback) {
- console.log('searching...');
- term = term.replace(/^\s+|\s+$/g, '') ;
- var found = [];
-
- function booksFound(tx, results) {
- var len = results.rows.length;
- console.log('found books: ' + len);
- for (var i=0; i<len; i++) {
- var item = results.rows.item(i);
- found.push({
- view: "Book",
- item: item
- });
- }
- };
-
- function tagsFound(tx, results) {
- var len = results.rows.length;
- console.log('found tags: ' + len);
- for (var i=0; i<len; i++) {
- var item = results.rows.item(i);
- found.push({
- view: "Tag",
- item: item
- });
- }
- // TODO error handling
- callback(found);
- };
-
-
- // FIXME escaping
- // TODO pliterki, start of the word match
- self.db.transaction(function(tx) {
- sql_term = self.sqlSanitize(term); // this is still insane, % and _
- tx.executeSql("SELECT * FROM book WHERE title LIKE '%"+sql_term+"%' ORDER BY sort_key LIMIT 10", [],
- //tx.executeSql("SELECT * FROM book WHERE title REGEXP '.*"+sql_term+".*' ORDER BY sort_key", [],
- function(tx, results) {
- // save the books
- booksFound(tx, results);
- // and proceed to tags
- tx.executeSql("SELECT * FROM tag WHERE name LIKE '%"+sql_term+"%' ORDER BY sort_key LIMIT 10",
- [], tagsFound);
- },
- function(err) {
- console.log('ERROR:search: '+err.code);
- callback([]);
- });
- });
- };
-
- self.chainSqls = function(sqls, success, error) {
- self.db.transaction(function(tx) {
- var do_next = function() {
- if (sqls.length) {
- var sql = sqls.shift();
- console.log(sql);
- tx.executeSql(sql, [], do_next, error);
- }
- else {
- success && success();
- }
- }
- do_next();
- });
- };
-
-
- self.update = function(data, success, error) {
- var addBookSql = new Sql("\
- INSERT OR REPLACE INTO book \
- (id, title, html_file, html_file_size, parent, parent_number, sort_key, pretty_size, authors) \
- VALUES \
- ('{0}', '{1}', '{2}', '{3}', '{4}', '{5}', '{6}', '{7}', '{8}')");
- var addTagSql = new Sql("INSERT OR REPLACE INTO tag (id, category, name, sort_key, books) VALUES ('{0}', '{1}', '{2}', '{3}', '{4}')");
-
- var sqls = [];
-
- if (data.deleted) {
- for (i in data.deleted.books) {
- var book_id = data.deleted.books[i];
- sqls.push("DELETE FROM book WHERE id=" + book_id);
- FileRepo.deleteIfExists(book_id);
- }
-
- for (i in data.deleted.tags) {
- var tag_id = data.deleted.tags[i];
- sqls.push("DELETE FROM tag WHERE id=" + tag_id);
- }
- }
-
- if (data.updated) {
- for (i in data.updated.books) {
- var book = data.updated.books[i];
- if (!book.html) book.html = {};
- if (!book.html.url) book.html.url = '';
- if (!book.html.size) book.html.size = '';
- if (!book.parent) book.parent = '';
- if (!book.parent_number) book.parent_number = '';
- var pretty_size = prettySize(book.html.size);
- sqls.push(addBookSql.prepare(
- book.id, book.title, book.html.url, book.html.size,
- book.parent, book.parent_number, book.sort_key, pretty_size, book.author
- ));
- FileRepo.deleteIfExists(book.id);
- }
-
- for (i in data.updated.tags) {
- var tag = data.updated.tags[i];
- var category = categories[tag.category];
- var books = tag.books.join(',');
- sqls.push(addTagSql.prepare(tag.id, category, tag.name, tag.sort_key, books));
- }
- }
-
- sqls.push("UPDATE state SET last_checked=" + data.time_checked);
-
- self.chainSqls(sqls, success, error);
- };
-
-
- this.sync = function(success, error) {
- self.withState(function(state) {
- var url = WL_UPDATE.replace("SINCE", state.last_checked);
- console.log('sync: ' + url);
- var xhr = new XMLHttpRequest();
- xhr.open("GET", url);
- xhr.onload = function() {
- console.log('sync: fetched by ajax: ' + url);
- self.update(JSON.parse(xhr.responseText), success, error);
- }
- xhr.onerror = function(e) {
- error && error("Błąd aktualizacji bazy danych." + e);
- }
- xhr.send();
- });
- };
-
- this.updateLocal = function() {
- FileRepo.withLocal(function(local) {
- self.db.transaction(function(tx) {
- tx.executeSql("UPDATE book SET _local=0", [], function(tx, results) {
- ll = local.length;
- var ids = [];
- for (var i = 0; i < ll; i ++) {
- ids.push(local[i].name);
- }
- ids = ids.join(',');
- tx.executeSql("UPDATE book SET _local=1 where id in ("+ids+")");
- });
- });
- }, function() {
- self.db.transaction(function(tx) {
- tx.executeSql("UPDATE book SET _local=0");
- });
- });
- };
-}
fnp / wl-mobile.git / blobdiff