3 SaaS Competitors in One Day: AI Workflow, SNS Scheduler & Video Meeting (Flutter + Supabase)

#flutter #supabase #buildinpublic #dart

3 SaaS Competitors in One Day: AI Workflow, SNS Scheduler & Video Meeting

What We Shipped

Three features in one session for 自分株式会社:

AI Workflow Automation — competing with Zapier, Power Automate
SNS Post Scheduler — competing with Hootsuite, Buffer
Video Meeting Manager — competing with Zoom, Google Meet

Plus 5 new Edge Functions added to CI/CD.

All use the same Edge Function First architecture.

AI Workflow Automation

Fetch Everything in One Call

class _WorkflowAutomationPageState extends State<WorkflowAutomationPage>
    with SingleTickerProviderStateMixin {
  late TabController _tabController;

  @override
  void initState() {
    _tabController = TabController(length: 3, vsync: this);
    _fetchData();
  }

  Future<void> _fetchData() async {
    final res = await _supabase.functions.invoke(
      'ai-workflow-automation',
      body: {'action': 'list'},
    );
    // workflows, templates, and stats returned in one response
  }
}

One Edge Function call returns workflows, templates, and statistics together. Flutter handles only rendering.

Focus-Timer Streak Calculation (TypeScript)

The focus-timer Edge Function calculates streaks entirely in Deno — no client-side logic:

function _calculateStreak(sessions: Array<{started_at?: string; status?: string}>): number {
  const dates = sessions
    .filter((s) => s.status === "completed")
    .map((s) => new Date(s.started_at!).toDateString());
  const unique = [...new Set(dates)];
  let streak = 0;
  const today = new Date();
  for (let i = 0; i < 30; i++) {
    const d = new Date(today);
    d.setDate(today.getDate() - i);
    if (unique.includes(d.toDateString())) streak++;
    else if (i > 0) break;
  }
  return streak;
}

new Set(dates) deduplicates multiple sessions on the same day. Loop backward from today — first missing day breaks the streak.

SNS Post Scheduler

Platform Color Map

Color _platformColor(String? platform) {
  switch (platform) {
    case 'x':         return Colors.black;
    case 'linkedin':  return const Color(0xFF0077B5);
    case 'instagram': return const Color(0xFFE1306C);
    case 'facebook':  return const Color(0xFF1877F2);
    default:          return Colors.grey;
  }
}

Four platforms (X, LinkedIn, Instagram, Facebook) with brand colors. The user picks a platform from a dialog, writes content, and taps "Save Draft" — the Edge Function handles scheduling.

Video Meeting Manager

AI Meeting Minutes

The video-meeting-manager Edge Function calls Gemini after each meeting to extract:

Summary
Action items (who, what, deadline)
Sentiment

IconData _meetingTypeIcon(String? type) {
  switch (type) {
    case 'video':        return Icons.videocam;
    case 'audio':        return Icons.mic;
    case 'webinar':      return Icons.cast;
    case 'screen_share': return Icons.screen_share;
    default:             return Icons.meeting_room;
  }
}

Meeting type drives the icon — no external package needed for a 4-variant icon set.

5 New Edge Functions

Function	Competing With	Responsibility
`bookmark-sync`	Pocket, Instapaper	Tagged bookmark sync
`note-sharing-enhanced`	Notion Share	Password-protected, expiry links
`focus-timer`	Forest, Focusmate	Pomodoro + streak tracking
`task-dependency`	Asana	Task dependency graph
`ai-writing-assistant`	Grammarly, Notion AI	Improve / summarize / translate

4-Instance Merge Conflict Pattern

Running 4 parallel dev instances (VSCode / Web / Windows / PowerShell) means edge_function_summary_card.dart conflicts on almost every session:

git checkout --theirs supabase/functions/edge_function_summary_card.dart
# Then append the new functions to the accepted version

--theirs takes the remote version, then we append our new additions. This is faster than manual conflict resolution on a file that changes every session.

Try it: 自分株式会社