/**
 * Voxyz API Routes - Mission Proposals
 * Handles proposal CRUD operations
 */

import { NextRequest, NextResponse } from 'next/server';
import { 
  getProposalsForDate, 
  approveProposal, 
  rejectProposal, 
  completeProposal,
  getTopProposalsForToday,
  expireOldProposals 
} from '@/lib/services/proposal.service';
import { getServiceSupabase } from '@/lib/supabase/client';

// GET /api/voxyz/proposals - Get proposals
export async function GET(request: NextRequest) {
  try {
    const { searchParams } = new URL(request.url);
    const date = searchParams.get('date');
    const today = searchParams.get('today');
    const status = searchParams.get('status');
    
    if (today) {
      const proposals = await getTopProposalsForToday();
      return NextResponse.json({ proposals });
    }
    
    if (date) {
      const proposals = await getProposalsForDate(new Date(date));
      return NextResponse.json({ proposals });
    }
    
    // Get all proposals with optional status filter
    const supabase = getServiceSupabase();
    let query = supabase.from('ops_mission_proposals').select('*');
    
    if (status) {
      query = query.eq('status', status);
    }
    
    const { data: proposals, error } = await query
      .order('created_at', { ascending: false })
      .limit(100);
    
    if (error) {
      throw error;
    }
    
    return NextResponse.json({ proposals: proposals || [] });
    
  } catch (error) {
    console.error('Error fetching proposals:', error);
    return NextResponse.json(
      { error: 'Failed to fetch proposals' },
      { status: 500 }
    );
  }
}

// POST /api/voxyz/proposals - Create a new proposal (manual)
export async function POST(request: NextRequest) {
  try {
    const body = await request.json();
    const { title, description, taskIds, projectIds, priorityScore } = body;
    
    if (!title) {
      return NextResponse.json(
        { error: 'Missing required field: title' },
        { status: 400 }
      );
    }
    
    const supabase = getServiceSupabase();
    
    const proposal = {
      proposal_date: new Date().toISOString().split('T')[0],
      status: 'pending',
      priority_score: priorityScore || 50,
      passes_cap_gates: true,
      cap_gate_violations: [],
      source_task_ids: taskIds || [],
      source_project_ids: projectIds || [],
      title,
      description: description || null,
      rationale: 'Manually created proposal',
      ai_analysis: {},
      expires_at: new Date(Date.now() + 24 * 60 * 60 * 1000).toISOString(),
    };
    
    const { data, error } = await supabase
      .from('ops_mission_proposals')
      .insert(proposal)
      .select()
      .single();
    
    if (error) {
      throw error;
    }
    
    return NextResponse.json({ proposal: data }, { status: 201 });
    
  } catch (error) {
    console.error('Error creating proposal:', error);
    return NextResponse.json(
      { error: 'Failed to create proposal' },
      { status: 500 }
    );
  }
}

// PATCH /api/voxyz/proposals - Update proposal status
export async function PATCH(request: NextRequest) {
  try {
    const body = await request.json();
    const { id, action, reason, notes } = body;
    
    if (!id || !action) {
      return NextResponse.json(
        { error: 'Missing required fields: id, action' },
        { status: 400 }
      );
    }
    
    let success = false;
    
    switch (action) {
      case 'approve':
        success = await approveProposal(id, 'manual-user'); // TODO: Get actual user ID
        break;
        
      case 'reject':
        if (!reason) {
          return NextResponse.json(
            { error: 'Rejection requires a reason' },
            { status: 400 }
          );
        }
        success = await rejectProposal(id, reason);
        break;
        
      case 'complete':
        success = await completeProposal(id, notes);
        break;
        
      default:
        return NextResponse.json(
          { error: `Unknown action: ${action}` },
          { status: 400 }
        );
    }
    
    if (!success) {
      return NextResponse.json(
        { error: `Failed to ${action} proposal` },
        { status: 500 }
      );
    }
    
    return NextResponse.json({ success: true });
    
  } catch (error) {
    console.error('Error updating proposal:', error);
    return NextResponse.json(
      { error: 'Failed to update proposal' },
      { status: 500 }
    );
  }
}

// DELETE /api/voxyz/proposals - Expire old proposals
export async function DELETE(request: NextRequest) {
  try {
    const expiredCount = await expireOldProposals();
    
    return NextResponse.json({ 
      success: true,
      expiredCount 
    });
    
  } catch (error) {
    console.error('Error expiring proposals:', error);
    return NextResponse.json(
      { error: 'Failed to expire proposals' },
      { status: 500 }
    );
  }
}