Cartoon

cartoons.js

@@ -0,0 +1,185 @@
+/*
+ * Copyright 2020 Zane Littrell, Nora Fossenier
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+const Login = require('./login');
+
+/*
+ * Controller class for the cartoons tab.
+ */
+class Cartoons {
+
+  /*
+   * Renders an index page with links to all the cartoon jpgs.
+   */
+  static index(req, dynamoDb, callback) {
+    const params = {
+      TableName: process.env.ISSUE_TABLE,
+    };
+    dynamoDb.scan(params).promise()
+    .then(data => {
+      callback('render', 'cartoons/index', {issues: data.Items});
+    })
+    .catch(error => {
+      console.error(error);
+      callback('render', 'error', {error: error});
+    });
+  }
+
+  /*
+   * Displays the given cartoon.
+   */
+  static show(req, dynamoDb, callback) {
+    const params = {
+      TableName: process.env.ISSUE_TABLE,
+      Key: {
+        issueId: Number(req.params.issueId)
+      }
+    };
+    dynamoDb.get(params).promise()
+    .then(data => {
+      callback('render', 'cartoons/show', {issue: data.Item});
+    })
+    .catch(error => {
+      console.error(error);
+      callback('render', 'error', {error: error});
+    });
+  }
+
+  /*
+   * Renders a form to create a new cartoon link.
+   * NOTE:
+   *   User must be logged in.
+   */
+  static new_cartoon(req, dynamoDb, callback) {
+    if (Login.authenticate(req)) {
+      callback('render', 'cartoons/new');
+    } else {
+      callback('redirect', '/login');
+    }
+  }
+
+  /*
+   * Creates a new cartoon link in the database. Redirects to the cartoons index on
+   * successful creation.
+   * NOTE:
+   *   User must be logged in.
+   */
+  static create(req, dynamoDb, callback) {
+    if (Login.authenticate(req)) {
+      const params = {
+        TableName: process.env.ISSUE_TABLE,
+        Item: {
+          issueId: Number(req.body.issueId),
+          link: req.file.location,
+        }
+      };
+      dynamoDb.put(params).promise()
+      .then(() => {
+        callback('redirect', '/cartoons');
+      })
+      .catch(error => {
+        console.error(error);
+        callback('render', 'error', {error: error});
+      });
+    } else {
+      callback('redirect', '/login');
+    }
+  }
+
+  /*
+   * Renders a page to edit a cartoon.
+   * NOTE:
+   *   User must be logged in.
+   */
+  static edit(req, dynamoDb, callback) {
+    if (Login.authenticate(req)) {
+      const params = {
+        TableName: process.env.ISSUE_TABLE,
+        Key: {
+          issueId: req.params.issueId
+        }
+      };
+      dynamoDb.get(params).promise()
+      .then(data => {
+        callback('render', 'cartoons/edit', {issue: data.Item});
+      })
+      .catch(error => {
+        console.error(error);
+        callback('render', 'error', {error: error});
+      });
+    } else {
+      callback('redirect', '/login');
+    }
+  }
+
+  /*
+   * Updates the data for the current cartoon. After successfully
+   * updating, the user is redirected to the cartoon index.
+   * NOTE:
+   *   User must be logged in.
+   */
+  static update(req, dynamoDb, callback) {
+    if (Login.authenticate(req)) {
+      const params = {
+        TableName: process.env.ISSUE_TABLE,
+        Key: {
+          issueId: req.body.issueId,
+        },
+        UpdateExpression: 'SET link = :link',
+        ExpressionAttributeValues: {
+          ':link': req.file.location,
+        }
+      };
+      console.log(params);
+      dynamoDb.update(params).promise()
+      .then(() => {
+        callback('redirect', '/cartoons');
+      })
+      .catch(error => {
+        console.error(error);
+        callback('render', 'error', {error: error});
+      });
+    } else {
+      callback('redirect', '/login');
+    }
+  }
+
+  /*
+   * Deletes the given cartoon and redirects to the cartoon index.
+   * NOTE:
+   *   User must be logged in.
+   */
+  static destroy(req, dynamoDb, callback) {
+    if (Login.authenticate(req)) {
+      const params = {
+        TableName: process.env.ISSUE_TABLE,
+        Key: {
+          issueId: req.params.issueId
+        }
+      };
+      dynamoDb.delete(params).promise()
+      .then(() => {
+        callback('redirect', '/cartoons');
+      })
+      .catch(error => {
+        console.error(error);
+        callback('render', 'error', {error: error});
+      });
+    } else {
+      callback('redirect', '/login');
+    }
+  }
+}
+module.exports = Cartoons;

subscribers.js

@@ -19,6 +19,21 @@
  */
 class Subscribers {
 
+  /*
+   * Returns a list of subscribers to the callback method
+   */
+  static index(req, dynamoDb, callback) {
+    const params = {TableName: process.env.SUBSCRIBERS_TABLE};
+    dynamoDb.scan(params, (error, result) => {
+      if (error) {
+        console.error(error);
+        callback('render', 'error', {error: error});
+      } else {
+        callback('render', 'subscribers/index', {subscribers: result.Items});
+      }
+    })
+  }
+
   /*
    * Renders a form to create a new subscriber.
    */