114 lines
2.8 KiB
JavaScript
114 lines
2.8 KiB
JavaScript
// adapted from https://github.com/harthur/costco. heather rules
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var costco = function() {
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var toUpdate = [];
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function handleEditorChange(e) {
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console.log(e.target.value);
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}
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function computeChanges() {
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$("#notification-message").text("Computing changes...");
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var text = $("#map-function").val();
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var docs;
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try {
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docs = JSON.parse(text);
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}
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catch(e) {
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try {
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docs = JSON.parse("[" + text + "]");
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}
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catch(e) {
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// not JSON, must be an edit function
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return mapDocs(text);
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}
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}
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if(!docs.length) docs = [docs];
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toUpdate = docs;
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$("#notification-message").text("Computing changes...");
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$("#status").html("<span class='warning'>About to add " + docs.length
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+ " docs to " + getDb().name + "</span>");
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$("#update-container").show();
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}
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function mapDocs(funcString) {
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try {
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eval("var editFunc = " + funcString);
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} catch(e) {
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$("#status").html("<span class='error'>error evaluating function: "
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+ e + "</span>");
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return;
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}
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toUpdate = [];
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var deleted = 0
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, edited = 0
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, failed = 0;
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getDocs(function(data) {
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var rows = data.rows;
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rows.forEach(function(row) {
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var doc = row.doc;
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try {
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var updated = editFunc(_.clone(doc));
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} catch(e) {
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failed++; // ignore if it throws on this doc
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return;
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}
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if(updated === null) {
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doc._deleted = true;
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toUpdate.push(doc);
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deleted++;
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}
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else if(updated && !_.isEqual(updated, doc)) {
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toUpdate.push(updated);
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edited++;
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}
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});
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// todo: make template for this
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$("#status").html("<span class='warning'>About to edit " + edited
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+ " docs and delete " + deleted + " docs from "
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+ getDb().name + "</span>");
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if(failed)
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$("#status").append(". Edit function threw on " + failed + " docs");
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$("#update-container").show();
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});
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}
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function updateDocs(callback) {
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if(!toUpdate.length)
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return callback();
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getDb().bulkSave({docs: toUpdate}, {
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success: callback,
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error: function(req, status, err) {
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$("#status").html("<span class='error'>error updating docs: "
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+ err + "</span>");
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}
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});
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}
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function getDocs(callback) {
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getDb().allDocs({
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include_docs : true,
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success : callback,
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error: function(req, status, err) {
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$("#status").html("<span class='error'>error retrieving docs: "
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+ err + "</span>");
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}
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});
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}
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return {
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handleEditorChange: handleEditorChange,
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computeChanges: computeChanges,
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mapDocs: mapDocs,
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updateDocs: updateDocs,
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getDocs: getDocs
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};
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}(); |