saved search can now be created from the search dialog

src/services/build_search_query.js

@@ -0,0 +1,67 @@
+module.exports = function(attrFilters, searchText) {
+    const joins = [];
+    const joinParams = [];
+    let where = '1';
+    const whereParams = [];
+
+    let i = 1;
+
+    for (const filter of attrFilters) {
+        joins.push(`LEFT JOIN attributes AS attr${i} ON attr${i}.noteId = notes.noteId AND attr${i}.name = ?`);
+        joinParams.push(filter.name);
+
+        where += " " + filter.relation + " ";
+
+        if (filter.operator === 'exists') {
+            where += `attr${i}.attributeId IS NOT NULL`;
+        }
+        else if (filter.operator === 'not-exists') {
+            where += `attr${i}.attributeId IS NULL`;
+        }
+        else if (filter.operator === '=' || filter.operator === '!=') {
+            where += `attr${i}.value ${filter.operator} ?`;
+            whereParams.push(filter.value);
+        }
+        else if ([">", ">=", "<", "<="].includes(filter.operator)) {
+            const floatParam = parseFloat(filter.value);
+
+            if (isNaN(floatParam)) {
+                where += `attr${i}.value ${filter.operator} ?`;
+                whereParams.push(filter.value);
+            }
+            else {
+                where += `CAST(attr${i}.value AS DECIMAL) ${filter.operator} ?`;
+                whereParams.push(floatParam);
+            }
+        }
+        else {
+            throw new Error("Unknown operator " + filter.operator);
+        }
+
+        i++;
+    }
+
+    let searchCondition = '';
+    const searchParams = [];
+
+    if (searchText.trim() !== '') {
+        // searching in protected notes is pointless because of encryption
+        searchCondition = ' AND (notes.isProtected = 0 AND (notes.title LIKE ? OR notes.content LIKE ?))';
+
+        searchText = '%' + searchText.trim() + '%';
+
+        searchParams.push(searchText);
+        searchParams.push(searchText); // two occurences in searchCondition
+    }
+
+    const query = `SELECT DISTINCT notes.noteId FROM notes
+            ${joins.join('\r\n')}
+              WHERE 
+                notes.isDeleted = 0
+                AND (${where}) 
+                ${searchCondition}`;
+
+    const params = joinParams.concat(whereParams).concat(searchParams);
+
+    return { query, params };
+};

src/services/notes.js

@@ -96,7 +96,7 @@ async function createNote(parentNoteId, title, content = "", extraOptions = {})
         mime: extraOptions.mime
     };
 
-    if (extraOptions.json) {
+    if (extraOptions.json && !note.type) {
         note.type = "code";
         note.mime = "application/json";
     }

src/services/parse_filters.js

@@ -0,0 +1,28 @@
+module.exports = function(searchText) {
+    const attrFilters = [];
+
+    const attrRegex = /(\b(and|or)\s+)?@(!?)([\w_-]+|"[^"]+")((=|!=|<|<=|>|>=)([\w_-]+|"[^"]+"))?/i;
+
+    let match = attrRegex.exec(searchText);
+
+    function trimQuotes(str) { return str.startsWith('"') ? str.substr(1, str.length - 2) : str; }
+
+    while (match != null) {
+        const relation = match[2] !== undefined ? match[2].toLowerCase() : 'and';
+        const operator = match[3] === '!' ? 'not-exists' : 'exists';
+
+        attrFilters.push({
+            relation: relation,
+            name: trimQuotes(match[4]),
+            operator: match[6] !== undefined ? match[6] : operator,
+            value: match[7] !== undefined ? trimQuotes(match[7]) : null
+        });
+
+        // remove attributes from further fulltext search
+        searchText = searchText.split(match[0]).join('');
+
+        match = attrRegex.exec(searchText);
+    }
+
+    return {attrFilters, searchText};
+};