changed "no channel" to be a success response

controllers/serveController.js

@@ -8,6 +8,7 @@ const SERVE = 'SERVE';
 const SHOW = 'SHOW';
 const SHOWLITE = 'SHOWLITE';
 const DEFAULT_THUMBNAIL = 'https://spee.ch/assets/img/video_thumb_default.png';
+const NO_CHANNEL = 'NO_CHANNEL';
 
 function checkForLocalAssetByClaimId (claimId, name) {
   return new Promise((resolve, reject) => {
@@ -148,16 +149,26 @@ module.exports = {
       db
         .getLongChannelId(channelName, channelId)  // 1. get the long channel Id
         .then(result => {  // 2. get all claims for that channel
+          if (result === NO_CHANNEL) {
+            return NO_CHANNEL;
+          }
           longChannelId = result;
           return db.getShortChannelIdFromLongChannelId(longChannelId, channelName);
         })
         .then(result => {  // 3. get all Claim records for this channel
+          if (result === NO_CHANNEL) {
+            return NO_CHANNEL;
+          }
           shortChannelId = result;
           return db.getAllChannelClaims(longChannelId);
         })
-        .then(allChannelClaims => {  // 4. add extra data not available from Claim table
-          if (allChannelClaims) {
-            allChannelClaims.forEach(element => {
+        .then(result => {  // 4. add extra data not available from Claim table
+          if (result === NO_CHANNEL) {
+            resolve(NO_CHANNEL);
+            return;
+          }
+          if (result) {
+            result.forEach(element => {
               const fileExtenstion = element.contentType.substring(element.contentType.lastIndexOf('/') + 1);
               element['showUrlLong'] = `/${channelName}:${longChannelId}/${element.name}`;
               element['directUrlLong'] = `/${channelName}:${longChannelId}/${element.name}.${fileExtenstion}`;
@@ -165,11 +176,11 @@ module.exports = {
               element['thumbnail'] = chooseThumbnail(element, DEFAULT_THUMBNAIL);
             });
           }
-          return resolve({
+          resolve({
             channelName,
             longChannelId,
             shortChannelId,
-            claims: allChannelClaims,
+            claims: result,
           });
         })
         .catch(error => {

models/index.js

@@ -6,6 +6,8 @@ const config = require('config');
 const db = {};
 const logger = require('winston');
 
+const NO_CHANNEL = 'NO_CHANNEL';
+
 const database = config.get('Database.Database');
 const username = config.get('Database.Username');
 const password = config.get('Database.Password');
@@ -88,7 +90,7 @@ function getLongChannelIdFromShortChannelId (channelName, channelId) {
       .then(result => {
         switch (result.length) {
           case 0:
-            throw new Error('That is an invalid Short Channel Id');
+            return resolve(NO_CHANNEL);
           default: // note results must be sorted
             return resolve(result[0].claimId);
         }
@@ -100,13 +102,14 @@ function getLongChannelIdFromShortChannelId (channelName, channelId) {
 }
 
 function getLongChannelIdFromChannelName (channelName) {
+  logger.debug(`getLongChannelIdFromChannelName(${channelName})`);
   return new Promise((resolve, reject) => {
     db
       .sequelize.query(`SELECT claimId, amount, height FROM Certificate WHERE name = '${channelName}' ORDER BY effectiveAmount DESC, height ASC LIMIT 1;`, { type: db.sequelize.QueryTypes.SELECT })
       .then(result => {
         switch (result.length) {
           case 0:
-            throw new Error('That is an invalid Channel Name');
+            return resolve(NO_CHANNEL);
           default:
             return resolve(result[0].claimId);
         }

routes/serve-routes.js

@@ -10,6 +10,7 @@ const CLAIM = 'CLAIM';
 const CLAIM_ID_CHAR = ':';
 const CHANNEL_CHAR = '@';
 const CLAIMS_PER_PAGE = 10;
+const NO_CHANNEL = 'NO_CHANNEL';
 
 function isValidClaimId (claimId) {
   return ((claimId.length === 40) && !/[^A-Za-z0-9]/g.test(claimId));
@@ -178,7 +179,9 @@ module.exports = (app) => {
       getChannelContents(channelName, channelId)
       // 2. respond to the request
       .then(result => {
-        if (!result.claims) {
+        if (result === NO_CHANNEL) { // no channel found
+          res.status(200).json('no channel found');
+        } else if (!result.claims) {  // channel found, but no claims
           res.status(200).render('channel', {
             channelName   : result.channelName,
             longChannelId : result.longChannelId,
@@ -190,7 +193,7 @@ module.exports = (app) => {
             totalPages    : 0,
             totalResults  : 0,
           });
-        } else {
+        } else {  // channel found, with claims
           const totalPages = determineTotalPages(result.claims.length);
           res.status(200).render('channel', {
             channelName   : result.channelName,