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var npm = require("npm/lib/npm.js");
var readInstalled = require("./read-installed.js");
var path = require("path");
var async = require("async");
var fs = require("fs");
var tsort = require("./tsort");
var util = require("util");
var _ = require("underscore");
var pluginUtils = require('./shared');
exports.prefix = 'ep_';
exports.loaded = false;
exports.plugins = {};
exports.parts = [];
exports.hooks = {};
exports.ensure = function (cb) {
if (!exports.loaded)
exports.update(cb);
else
cb();
};
exports.formatPlugins = function () {
return _.keys(exports.plugins).join(", ");
};
exports.formatPluginsWithVersion = function () {
var plugins = [];
_.forEach(exports.plugins, function(plugin){
if(plugin.package.name !== "ep_etherpad-lite"){
var pluginStr = plugin.package.name + "@" + plugin.package.version;
plugins.push(pluginStr);
}
});
return plugins.join(", ");
};
exports.formatParts = function () {
return _.map(exports.parts, function (part) { return part.full_name; }).join("\n");
};
exports.formatHooks = function (hook_set_name) {
var res = [];
var hooks = pluginUtils.extractHooks(exports.parts, hook_set_name || "hooks");
_.chain(hooks).keys().forEach(function (hook_name) {
_.forEach(hooks[hook_name], function (hook) {
res.push("<dt>" + hook.hook_name + "</dt><dd>" + hook.hook_fn_name + " from " + hook.part.full_name + "</dd>");
});
});
return "<dl>" + res.join("\n") + "</dl>";
};
exports.callInit = function (cb) {
var hooks = require("./hooks");
async.map(
Object.keys(exports.plugins),
function (plugin_name, cb) {
var plugin = exports.plugins[plugin_name];
fs.stat(path.normalize(path.join(plugin.package.path, ".ep_initialized")), function (err, stats) {
if (err) {
async.waterfall([
function (cb) { fs.writeFile(path.normalize(path.join(plugin.package.path, ".ep_initialized")), 'done', cb); },
function (cb) { hooks.aCallAll("init_" + plugin_name, {}, cb); },
cb,
]);
} else {
cb();
}
});
},
function () { cb(); }
);
}
exports.pathNormalization = function (part, hook_fn_name) {
return path.normalize(path.join(path.dirname(exports.plugins[part.plugin].package.path), hook_fn_name));
}
exports.update = function (cb) {
exports.getPackages(function (er, packages) {
var parts = [];
var plugins = {};
// Load plugin metadata ep.json
async.forEach(
Object.keys(packages),
function (plugin_name, cb) {
loadPlugin(packages, plugin_name, plugins, parts, cb);
},
function (err) {
if (err) cb(err);
exports.plugins = plugins;
exports.parts = sortParts(parts);
exports.hooks = pluginUtils.extractHooks(exports.parts, "hooks", exports.pathNormalization);
exports.loaded = true;
exports.callInit(cb);
}
);
});
};
exports.getPackages = function (cb) {
// Load list of installed NPM packages, flatten it to a list, and filter out only packages with names that
var dir = path.resolve(npm.dir, '..');
readInstalled(dir, function (er, data) {
if (er) cb(er, null);
var packages = {};
function flatten(deps) {
_.chain(deps).keys().each(function (name) {
if (name.indexOf(exports.prefix) === 0) {
packages[name] = _.clone(deps[name]);
// Delete anything that creates loops so that the plugin
// list can be sent as JSON to the web client
delete packages[name].dependencies;
delete packages[name].parent;
}
// I don't think we need recursion
//if (deps[name].dependencies !== undefined) flatten(deps[name].dependencies);
});
}
var tmp = {};
tmp[data.name] = data;
flatten(tmp[undefined].dependencies);
cb(null, packages);
});
};
function loadPlugin(packages, plugin_name, plugins, parts, cb) {
var plugin_path = path.resolve(packages[plugin_name].path, "ep.json");
fs.readFile(
plugin_path,
function (er, data) {
if (er) {
console.error("Unable to load plugin definition file " + plugin_path);
return cb();
}
try {
var plugin = JSON.parse(data);
plugin['package'] = packages[plugin_name];
plugins[plugin_name] = plugin;
_.each(plugin.parts, function (part) {
part.plugin = plugin_name;
part.full_name = plugin_name + "/" + part.name;
parts[part.full_name] = part;
});
} catch (ex) {
console.error("Unable to parse plugin definition file " + plugin_path + ": " + ex.toString());
}
cb();
}
);
}
function partsToParentChildList(parts) {
var res = [];
_.chain(parts).keys().forEach(function (name) {
_.each(parts[name].post || [], function (child_name) {
res.push([name, child_name]);
});
_.each(parts[name].pre || [], function (parent_name) {
res.push([parent_name, name]);
});
if (!parts[name].pre && !parts[name].post) {
res.push([name, ":" + name]); // Include apps with no dependency info
}
});
return res;
}
// Used only in Node, so no need for _
function sortParts(parts) {
return tsort(
partsToParentChildList(parts)
).filter(
function (name) { return parts[name] !== undefined; }
).map(
function (name) { return parts[name]; }
);
}
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