import { NextResponse } from "next/server";
import { getServiceSupabase } from "@/lib/supabase/client";
import { getAuthenticatedUser } from "@/lib/server/auth";

export const runtime = "nodejs";

// GET - fetch all sprints (optionally filtered by status)
export async function GET(request: Request) {
  try {
    const user = await getAuthenticatedUser();
    if (!user) {
      return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
    }
    
    // Parse query params
    const { searchParams } = new URL(request.url);
    const status = searchParams.get("status");
    
    const supabase = getServiceSupabase();
    let query = supabase
      .from("sprints")
      .select("*")
      .order("start_date", { ascending: true });
    
    // Filter by status if provided
    if (status && ["planning", "active", "completed"].includes(status)) {
      query = query.eq("status", status);
    }
    
    const { data: sprints, error } = await query;
    
    if (error) throw error;
    
    return NextResponse.json({ sprints: sprints || [] });
  } catch (error) {
    console.error(">>> API GET /sprints error:", error);
    return NextResponse.json({ error: "Failed to fetch sprints" }, { status: 500 });
  }
}

// POST - create a new sprint
export async function POST(request: Request) {
  try {
    const user = await getAuthenticatedUser();
    if (!user) {
      return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
    }
    
    const body = await request.json();
    const { name, goal, startDate, endDate, status, projectId } = body;
    
    if (!name || typeof name !== "string") {
      return NextResponse.json({ error: "Missing sprint name" }, { status: 400 });
    }
    
    const supabase = getServiceSupabase();
    const now = new Date().toISOString();
    
    const { data, error } = await supabase
      .from("sprints")
      .insert({
        name,
        goal: goal || null,
        start_date: startDate || now,
        end_date: endDate || now,
        status: status || "planning",
        project_id: projectId || null,
        created_at: now,
      })
      .select()
      .single();
    
    if (error) throw error;
    
    return NextResponse.json({ success: true, sprint: data });
  } catch (error) {
    console.error(">>> API POST /sprints error:", error);
    return NextResponse.json({ error: "Failed to create sprint" }, { status: 500 });
  }
}

// PATCH - update a sprint
export async function PATCH(request: Request) {
  try {
    const user = await getAuthenticatedUser();
    if (!user) {
      return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
    }
    
    const body = await request.json();
    const { id, ...updates } = body;
    
    if (!id) {
      return NextResponse.json({ error: "Missing sprint id" }, { status: 400 });
    }
    
    const supabase = getServiceSupabase();
    const now = new Date().toISOString();
    
    // Map camelCase to snake_case for database
    const dbUpdates: Record<string, unknown> = {};
    if (updates.name !== undefined) dbUpdates.name = updates.name;
    if (updates.goal !== undefined) dbUpdates.goal = updates.goal;
    if (updates.startDate !== undefined) dbUpdates.start_date = updates.startDate;
    if (updates.endDate !== undefined) dbUpdates.end_date = updates.endDate;
    if (updates.status !== undefined) dbUpdates.status = updates.status;
    if (updates.projectId !== undefined) dbUpdates.project_id = updates.projectId;
    dbUpdates.updated_at = now;
    
    const { data, error } = await supabase
      .from("sprints")
      .update(dbUpdates)
      .eq("id", id)
      .select()
      .single();
    
    if (error) throw error;
    
    return NextResponse.json({ success: true, sprint: data });
  } catch (error) {
    console.error(">>> API PATCH /sprints error:", error);
    return NextResponse.json({ error: "Failed to update sprint" }, { status: 500 });
  }
}

// DELETE - delete a sprint
export async function DELETE(request: Request) {
  try {
    const user = await getAuthenticatedUser();
    if (!user) {
      return NextResponse.json({ error: "Unauthorized" }, { status: 401 });
    }
    
    const { id } = await request.json();
    
    if (!id) {
      return NextResponse.json({ error: "Missing sprint id" }, { status: 400 });
    }
    
    const supabase = getServiceSupabase();
    const { error } = await supabase.from("sprints").delete().eq("id", id);
    
    if (error) throw error;
    
    return NextResponse.json({ success: true });
  } catch (error) {
    console.error(">>> API DELETE /sprints error:", error);
    return NextResponse.json({ error: "Failed to delete sprint" }, { status: 500 });
  }
}