Projects & Systems Repository // Active Ledger

Production Software Built to Work

Name: Datuma — Field Surveying Mobile App
Author: Ahmed Elsayed

Ahmed Elsayed's systems index. Click lines on the ledger database to audit logs, blueprint schematics, design patterns, and compiled source scripts instantly.

SYSTEM LOG INDEX

QUERY ENGINE RUNNING // STARK SCHEMATICS

[ SYSTEM / PROJECT NAME ]

[ CORE TAG / CATEGORY ]

[ STATUS / DEPLOYMENT YEAR ]

Survey Point Manager (AutoCAD Plugin)

An all-in-one localized coordinate and survey point manager executing inside the CAD environment (SURVEYPOINTMANAGER).

Desktop Automation & ObjectARX

STATUS:ACTIVE//(AutoCAD 2015–2027)

Datuma — Field Surveying Mobile App

Offline-first Flutter field surveying app — 12+ format import/export, SQLite projects, Google Maps visualization, GPS capture, 11 calculators, and bilingual learning — aligned with Survey Point Manager.

Mobile / Flutter / Field GIS

STATUS:ACTIVE//v1.0.4

Rackify — Pallet Racking Inspection SaaS

Multi-tenant pallet racking inspection platform — ASP.NET Core API, Nuxt dashboard, native iOS/Android field apps, PostGIS blueprints, offline sync, and compliance PDF pipeline.

Multi-Tenant SaaS / Field Operations

STATUS:ACTIVE//2024–Present

Surveying Core (surveyingcore.com)

Field calculators, private file converters, and paired learning content for surveyors — runs in any browser, coordinate files never leave your device.

Surveying Tools & Field Workflow

STATUS:ACTIVE//2023–Present

Mobile / Flutter / Field GIS

Datuma — Field Surveying Mobile App

Active / v1.0.4INTEGRITY RECORD COMPILED

01 / Executive Summary

Datuma (datuma_mobile) is a production Flutter app for iOS and Android that puts survey point management in the field. Provider + Repository architecture over SQLite (schema v12), isolate-based parsers ported from the Survey Point Manager C# plugin, proj4dart coordinate conversion (WGS84/UTM/State Plane), and Google Maps with shape drawing and advanced measurement. Optional Supabase community, Google Drive backup, and Firebase Crashlytics — core import/export/projects work fully offline without an account.

02 / Project Milestones

12+ import parsers and exporters (CSV, GSI, SDR, IDX, DXF, KML, GeoJSON, LandXML, Shapefile, LAS, SPJ) with content-based auto-detection and compute() isolate offload.
Five-field point model (PN/E/N/Z/Code) aligned with Survey Point Manager AutoCAD plugin — CoordinateService and TXT/IDX parsers ported from C# plugin sources.
GoRouter StatefulShellRoute with 4-tab shell (Home, Projects, Learn, Tools); map stack split into MapProvider, MapStateManager, MapRenderingService, MapGeometryEngine.
Versioned .spj project package (datuma.project.package v2) for cross-device sharing; quick-convert workflow with conversion_history table.
Bilingual Surveyor Career Journey (EN/AR) with 36+ test files covering parsers, export round-trips, measurement geometry, and localization validation.

03 / Metric Results

Import / Export Formats12+

Field Calculators11 Tools

Core Offline WorkNo Account

Automated Tests36+ Files

04 / Core Tech Stack

Flutter 3.38+Dart 3.10ProviderGoRouterSQLite (sqflite)Google Mapsproj4dartSupabaseFirebase Crashlytics