import { serve } from "https://deno.land/std@0.190.0/http/server.ts";
import { createClient } from "https://esm.sh/@supabase/supabase-js@2";

const corsHeaders = {
  "Access-Control-Allow-Origin": "*",
  "Access-Control-Allow-Headers": "authorization, x-client-info, apikey, content-type",
};

interface DeleteOrderRequest {
  order_id: string;
}

serve(async (req: Request): Promise<Response> => {
  if (req.method === "OPTIONS") {
    return new Response(null, { headers: corsHeaders });
  }

  try {
    const body: DeleteOrderRequest = await req.json();
    const { order_id } = body;

    if (!order_id) {
      return new Response(
        JSON.stringify({ success: false, error: "order_id is required" }),
        { status: 400, headers: { ...corsHeaders, "Content-Type": "application/json" } }
      );
    }

    console.log("[DELETE-ORDER] Deleting order:", order_id);

    const supabaseUrl = Deno.env.get("SUPABASE_URL")!;
    const supabaseServiceKey = Deno.env.get("SUPABASE_SERVICE_ROLE_KEY")!;
    const supabase = createClient(supabaseUrl, supabaseServiceKey);

    // Get consulting sessions for this order to delete calendar events
    const { data: sessions } = await supabase
      .from("consulting_sessions")
      .select("id, calendar_event_id")
      .eq("order_id", order_id);

    if (sessions && sessions.length > 0) {
      console.log("[DELETE-ORDER] Found consulting sessions:", sessions.length);

      // Delete calendar events for each session
      for (const session of sessions) {
        if (session.calendar_event_id) {
          try {
            await supabase.functions.invoke('delete-calendar-event', {
              body: { session_id: session.id }
            });
            console.log("[DELETE-ORDER] Deleted calendar event for session:", session.id);
          } catch (err) {
            console.log("[DELETE-ORDER] Failed to delete calendar event:", err);
            // Continue with order deletion even if calendar deletion fails
          }
        }
      }
    }

    // Call the database function to delete the order
    const { data, error } = await supabase
      .rpc("delete_order", { order_uuid: order_id });

    if (error) {
      console.error("[DELETE-ORDER] Error:", error);
      return new Response(
        JSON.stringify({ success: false, error: error.message }),
        { status: 500, headers: { ...corsHeaders, "Content-Type": "application/json" } }
      );
    }

    console.log("[DELETE-ORDER] Success:", data);

    return new Response(
      JSON.stringify(data),
      { headers: { ...corsHeaders, "Content-Type": "application/json" } }
    );

  } catch (error: any) {
    console.error("[DELETE-ORDER] Unexpected error:", error);
    return new Response(
      JSON.stringify({
        success: false,
        error: error.message || "Internal server error"
      }),
      { status: 500, headers: { ...corsHeaders, "Content-Type": "application/json" } }
    );
  }
});