1 files changed, 141 insertions, 0 deletions
diff --git a/javascript/app/services/store.js b/javascript/app/services/store.js
new file mode 100644
index 0000000..cf48f9d
--- /dev/null
+++ b/javascript/app/services/store.js
@@ -0,0 +1,141 @@
+import Ember from 'ember';
+import RSVP from 'rsvp';
+import {urls} from '../utils/api-urls';
+
+
+//********************************************************************************
+//https://coderwall.com/p/zrlulq/parsing-a-link-header-in-javascript
+function unquote(value) {
+  if (value.charAt(0) == '"' && value.charAt(value.length - 1) == '"') {
+    return value.substring(1, value.length - 1);
+  } else {
+    return value;
+  }
+}
+
+function parseLinkHeader(header) {
+  if(!header) {return {}}
+  var linkexp = /<[^>]*>\s*(\s*;\s*[^\(\)<>@,;:"\/\[\]\?={} \t]+=(([^\(\)<>@,;:"\/\[\]\?={} \t]+)|("[^"]*")))*(,|$)/g;
+  var paramexp = /[^\(\)<>@,;:"\/\[\]\?={} \t]+=(([^\(\)<>@,;:"\/\[\]\?={} \t]+)|("[^"]*"))/g;
+
+  var matches = header.match(linkexp);
+  var rels = new Object();
+  for (let i = 0; i < matches.length; i++) {
+    var split = matches[i].split('>');
+    var href = split[0].substring(1);
+    var ps = split[1];
+    var link = new Object();
+    link.href = href;
+    var s = ps.match(paramexp);
+    for (let j = 0; j < s.length; j++) {
+      var p = s[j];
+      var paramsplit = p.split('=');
+      var name = paramsplit[0];
+      link[name] = unquote(paramsplit[1]);
+    }
+
+    if (link.rel != undefined) {
+      rels[link.rel] = link;
+    }
+  }
+  return rels;
+}
+//********************************************************************************
+
+
+export default Ember.Service.extend({
+  init() {    
+    this.packages = {};
+    this.files = {};
+    this.haskellModules = {};
+    this.definitionSites = {};
+    this.modulePaths = {};
+    this.expressions = {};
+    this.references = {};
+  },
+  loadPackage(packageId) {
+    const packageInfo = this.packages[packageId];
+    if(packageInfo) {
+      return new RSVP.Promise((resolve) => {resolve(packageInfo);});
+    } else {
+      const url = urls.packageInfoUrl(packageId);
+      return Ember.$.getJSON(url).then((packageInfo) => {
+        this.packages[packageId] = packageInfo;
+        return packageInfo;
+      });
+    }
+  },
+  loadFile(packageId,filePath) {
+    const fileId = packageId + "/" + filePath;
+    const file = this.files[fileId];    
+    if(file) {
+      return new RSVP.Promise((resolve) => {resolve(file);});
+    } else {
+      const url = urls.fileUrl(packageId,filePath);      
+      return Ember.$.get({url:url,dataType:"text"}).then((text) => {        
+        const file = {};
+        file.text = text;
+        file.packageId = packageId;
+        file.isHaskellModule = false;
+        file.id = filePath;
+        this.files[fileId] = file;
+        return file;
+      });
+    }
+  },
+  loadHaskellModule(packageId,filePath) {    
+    const moduleId = packageId + "/" + filePath ;
+    const module = this.haskellModules[moduleId];
+    if(module) {
+      return new RSVP.Promise((resolve)=>{resolve(module);});
+    } else {
+      const url = urls.haskellModuleUrl(packageId,filePath);
+      return Ember.$.getJSON(url).then((module) => {
+        module.packageId = packageId;        
+        module.isHaskellModule = true;
+        this.haskellModules[moduleId] = module;
+        return module;
+      });
+    }
+  },
+  loadDefinitionSite(packageId,moduleName,componentId,entity,name) {
+    const id = packageId + "/"+ componentId + "/" + moduleName + "/" + entity + "/" + name;
+    const definitionSite = this.definitionSites[id];
+    if(definitionSite) {
+      return new RSVP.Promise((resolve)=>{resolve(definitionSite);});
+    } else {
+      const url = urls.identifierDefinitionSiteUrl(packageId,moduleName,componentId,entity,name);
+      return Ember.$.getJSON(url).then((definitionSite) => {
+        this.definitionSites[id] = definitionSite;
+        return definitionSite;
+      });
+    }
+  },  
+  loadExpressions(packageId,modulePath,lineStart,columnStart,lineEnd,columnEnd) {
+    const id = packageId + "/" + encodeURIComponent(modulePath)
+          + "/" + lineStart + "/" + columnStart + "/" + lineEnd + "/" + columnEnd;
+    const exprs = this.expressions[id];
+    if(exprs) {
+      return new RSVP.Promise((resolve)=>{resolve(exprs);}); 
+    } else {
+      const url = urls.expressionsUrl(packageId,modulePath,lineStart,columnStart,lineEnd,columnEnd);      
+      return Ember.$.getJSON(url).then((exprs) => {        
+        this.expressions[id] = exprs;
+        return exprs;
+      });     
+    }
+  },
+  loadFromUrlPaginated(url) {      
+    return Ember.$.getJSON(url).then((items,textStatus,jqXHR) => {      
+      const linkHeaderText = jqXHR.getResponseHeader('Link');
+      const totalCountHeaderText = jqXHR.getResponseHeader('x-total-count');
+      const linkHeader = parseLinkHeader(linkHeaderText);
+      const total = parseInt(totalCountHeaderText);
+      return {
+        items:items,
+        total:total,
+        linkHeader:linkHeader
+      };
+    });
+  }
+});