next and previous lot buttons

handlers/lots-get/next.d.ts

@@ -0,0 +1,3 @@
+import type { RequestHandler } from "express";
+export declare const handler: RequestHandler;
+export default handler;

handlers/lots-get/next.js

@@ -0,0 +1,11 @@
+import * as configFunctions from "../../helpers/functions.config.js";
+import { getNextLotId } from "../../helpers/lotOccupancyDB/getNextLotId.js";
+export const handler = (request, response) => {
+    const lotId = request.params.lotId;
+    const nextLotId = getNextLotId(lotId);
+    if (!nextLotId) {
+        return response.redirect(configFunctions.getProperty("reverseProxy.urlPrefix") + "/lots/?error=noNextLotIdFound");
+    }
+    return response.redirect(configFunctions.getProperty("reverseProxy.urlPrefix") + "/lots/" + nextLotId);
+};
+export default handler;

handlers/lots-get/next.ts

@@ -0,0 +1,26 @@
+import type {
+    RequestHandler
+} from "express";
+
+import * as configFunctions from "../../helpers/functions.config.js";
+
+import {
+    getNextLotId
+} from "../../helpers/lotOccupancyDB/getNextLotId.js";
+
+
+export const handler: RequestHandler = (request, response) => {
+
+    const lotId = request.params.lotId;
+
+    const nextLotId = getNextLotId(lotId);
+
+    if (!nextLotId) {
+        return response.redirect(configFunctions.getProperty("reverseProxy.urlPrefix") + "/lots/?error=noNextLotIdFound");
+    }
+
+    return response.redirect(configFunctions.getProperty("reverseProxy.urlPrefix") + "/lots/" + nextLotId);
+};
+
+
+export default handler;

handlers/lots-get/previous.d.ts

@@ -0,0 +1,3 @@
+import type { RequestHandler } from "express";
+export declare const handler: RequestHandler;
+export default handler;

handlers/lots-get/previous.js

@@ -0,0 +1,11 @@
+import * as configFunctions from "../../helpers/functions.config.js";
+import { getPreviousLotId } from "../../helpers/lotOccupancyDB/getPreviousLotId.js";
+export const handler = (request, response) => {
+    const lotId = request.params.lotId;
+    const previousLotId = getPreviousLotId(lotId);
+    if (!previousLotId) {
+        return response.redirect(configFunctions.getProperty("reverseProxy.urlPrefix") + "/lots/?error=noPreviousLotIdFound");
+    }
+    return response.redirect(configFunctions.getProperty("reverseProxy.urlPrefix") + "/lots/" + previousLotId);
+};
+export default handler;

handlers/lots-get/previous.ts

@@ -0,0 +1,26 @@
+import type {
+    RequestHandler
+} from "express";
+
+import * as configFunctions from "../../helpers/functions.config.js";
+
+import {
+    getPreviousLotId
+} from "../../helpers/lotOccupancyDB/getPreviousLotId.js";
+
+
+export const handler: RequestHandler = (request, response) => {
+
+    const lotId = request.params.lotId;
+
+    const previousLotId = getPreviousLotId(lotId);
+
+    if (!previousLotId) {
+        return response.redirect(configFunctions.getProperty("reverseProxy.urlPrefix") + "/lots/?error=noPreviousLotIdFound");
+    }
+
+    return response.redirect(configFunctions.getProperty("reverseProxy.urlPrefix") + "/lots/" + previousLotId);
+};
+
+
+export default handler;

helpers/lotOccupancyDB/getNextLotId.d.ts

@@ -0,0 +1,2 @@
+export declare const getNextLotId: (lotId: number | string) => number;
+export default getNextLotId;

helpers/lotOccupancyDB/getNextLotId.js

@@ -0,0 +1,20 @@
+import sqlite from "better-sqlite3";
+import { lotOccupancyDB as databasePath } from "../../data/databasePaths.js";
+export const getNextLotId = (lotId) => {
+    const database = sqlite(databasePath, {
+        readonly: true
+    });
+    const result = database
+        .prepare("select lotId from Lots" +
+        " where recordDelete_timeMillis is null" +
+        " and lotName > (select lotName from Lots where lotId = ?)" +
+        " order by lotName" +
+        " limit 1")
+        .get(lotId);
+    database.close();
+    if (result) {
+        return result.lotId;
+    }
+    return undefined;
+};
+export default getNextLotId;

helpers/lotOccupancyDB/getNextLotId.ts

@@ -0,0 +1,34 @@
+import sqlite from "better-sqlite3";
+
+import {
+    lotOccupancyDB as databasePath
+} from "../../data/databasePaths.js";
+
+
+export const getNextLotId = (lotId: number | string): number => {
+
+    const database = sqlite(databasePath, {
+        readonly: true
+    });
+
+    const result: {
+            lotId: number
+        } = database
+        .prepare("select lotId from Lots" +
+            " where recordDelete_timeMillis is null" +
+            " and lotName > (select lotName from Lots where lotId = ?)" +
+            " order by lotName" +
+            " limit 1")
+        .get(lotId);
+
+    database.close();
+
+    if (result) {
+        return result.lotId;
+    }
+
+    return undefined;
+};
+
+
+export default getNextLotId;

helpers/lotOccupancyDB/getPreviousLotId.d.ts

@@ -0,0 +1,2 @@
+export declare const getPreviousLotId: (lotId: number | string) => number;
+export default getPreviousLotId;

helpers/lotOccupancyDB/getPreviousLotId.js

@@ -0,0 +1,20 @@
+import sqlite from "better-sqlite3";
+import { lotOccupancyDB as databasePath } from "../../data/databasePaths.js";
+export const getPreviousLotId = (lotId) => {
+    const database = sqlite(databasePath, {
+        readonly: true
+    });
+    const result = database
+        .prepare("select lotId from Lots" +
+        " where recordDelete_timeMillis is null" +
+        " and lotName < (select lotName from Lots where lotId = ?)" +
+        " order by lotName desc" +
+        " limit 1")
+        .get(lotId);
+    database.close();
+    if (result) {
+        return result.lotId;
+    }
+    return undefined;
+};
+export default getPreviousLotId;

helpers/lotOccupancyDB/getPreviousLotId.ts

@@ -0,0 +1,34 @@
+import sqlite from "better-sqlite3";
+
+import {
+    lotOccupancyDB as databasePath
+} from "../../data/databasePaths.js";
+
+
+export const getPreviousLotId = (lotId: number | string): number => {
+
+    const database = sqlite(databasePath, {
+        readonly: true
+    });
+
+    const result: {
+            lotId: number
+        } = database
+        .prepare("select lotId from Lots" +
+            " where recordDelete_timeMillis is null" +
+            " and lotName < (select lotName from Lots where lotId = ?)" +
+            " order by lotName desc" +
+            " limit 1")
+        .get(lotId);
+
+    database.close();
+
+    if (result) {
+        return result.lotId;
+    }
+
+    return undefined;
+};
+
+
+export default getPreviousLotId;

routes/lots.js

@@ -3,6 +3,8 @@ import * as permissionHandlers from "../handlers/permissions.js";
 import handler_search from "../handlers/lots-get/search.js";
 import handler_doSearchLots from "../handlers/lots-post/doSearchLots.js";
 import handler_view from "../handlers/lots-get/view.js";
+import handler_next from "../handlers/lots-get/next.js";
+import handler_previous from "../handlers/lots-get/previous.js";
 import handler_new from "../handlers/lots-get/new.js";
 import handler_edit from "../handlers/lots-get/edit.js";
 import handler_doCreateLot from "../handlers/lots-post/doCreateLot.js";
@@ -15,6 +17,8 @@ router.get("/", handler_search);
 router.post("/doSearchLots", handler_doSearchLots);
 router.get("/new", permissionHandlers.updateGetHandler, handler_new);
 router.get("/:lotId", handler_view);
+router.get("/:lotId/next", handler_next);
+router.get("/:lotId/previous", handler_previous);
 router.get("/:lotId/edit", permissionHandlers.updateGetHandler, handler_edit);
 router.post("/doCreateLot", permissionHandlers.updatePostHandler, handler_doCreateLot);
 router.post("/doUpdateLot", permissionHandlers.updatePostHandler, handler_doUpdateLot);

routes/lots.ts

@@ -6,6 +6,9 @@ import handler_search from "../handlers/lots-get/search.js";
 import handler_doSearchLots from "../handlers/lots-post/doSearchLots.js";
 
 import handler_view from "../handlers/lots-get/view.js";
+import handler_next from "../handlers/lots-get/next.js";
+import handler_previous from "../handlers/lots-get/previous.js";
+
 import handler_new from "../handlers/lots-get/new.js";
 import handler_edit from "../handlers/lots-get/edit.js";
 
@@ -46,6 +49,14 @@ router.get("/:lotId",
   handler_view);
 
 
+router.get("/:lotId/next",
+  handler_next);
+
+
+router.get("/:lotId/previous",
+  handler_previous);
+
+
 router.get("/:lotId/edit",
   permissionHandlers.updateGetHandler,
   handler_edit);

views/lot-view.ejs

@@ -19,16 +19,29 @@
     <%= lot.lotName %>
 </h1>
 
-<% if (user.userProperties.canUpdate) { %>
 <div class="fixed-container is-fixed-bottom-right mx-4 my-4 has-text-right is-hidden-print">
+
+    <a class="button is-circle is-link has-tooltip-left"
+        data-tooltip="Previous <%= configFunctions.getProperty("aliases.lot") %>"
+        href="<%= urlPrefix %>/lots/<%= lot.lotId %>/previous">
+        <i class="fas fa-arrow-left" aria-hidden="true"></i>
+        <span class="sr-only">Previous <%= configFunctions.getProperty("aliases.lot") %></span>
+    </a>
+    <a class="button is-circle is-link has-tooltip-left"
+        data-tooltip="Next <%= configFunctions.getProperty("aliases.lot") %>"
+        href="<%= urlPrefix %>/lots/<%= lot.lotId %>/next">
+        <i class="fas fa-arrow-right" aria-hidden="true"></i>
+        <span class="sr-only">Next <%= configFunctions.getProperty("aliases.lot") %></span>
+    </a>
+    <% if (user.userProperties.canUpdate) { %>
         <a class="button is-circle is-primary has-tooltip-left"
             data-tooltip="Update <%= configFunctions.getProperty("aliases.lot") %>"
             href="<%= urlPrefix %>/lots/<%= lot.lotId %>/edit">
             <i class="fas fa-pencil-alt" aria-hidden="true"></i>
             <span class="sr-only">Update <%= configFunctions.getProperty("aliases.lot") %></span>
         </a>
-</div>
     <% } %>
+</div>
 
 <div class="columns">
     <div class="column">