-- CampGear Supabase Schema
-- Run this in Supabase SQL Editor

-- Enable UUID extension
CREATE EXTENSION IF NOT EXISTS "uuid-ossp";

-- ENUM types
CREATE TYPE equipment_category AS ENUM (
  'tent', 'sleeping', 'cooking', 'lighting', 'clothing',
  'backpack', 'furniture', 'safety', 'electronics', 'other'
);

CREATE TYPE sale_status AS ENUM ('listing', 'reserved', 'sold', 'cancelled');
CREATE TYPE sale_platform AS ENUM ('danggeun', 'bunjang', 'joonggo', 'naver', 'other');

-- purchases table
CREATE TABLE purchases (
  id UUID DEFAULT uuid_generate_v4() PRIMARY KEY,
  user_id UUID REFERENCES auth.users(id) ON DELETE CASCADE NOT NULL,
  name TEXT NOT NULL,
  category equipment_category NOT NULL,
  brand TEXT,
  price INTEGER NOT NULL DEFAULT 0,
  purchase_date DATE NOT NULL,
  store TEXT,
  warranty_until DATE,
  notes TEXT,
  created_at TIMESTAMPTZ DEFAULT NOW() NOT NULL,
  updated_at TIMESTAMPTZ DEFAULT NOW() NOT NULL
);

-- used_sales table
CREATE TABLE used_sales (
  id UUID DEFAULT uuid_generate_v4() PRIMARY KEY,
  user_id UUID REFERENCES auth.users(id) ON DELETE CASCADE NOT NULL,
  purchase_id UUID REFERENCES purchases(id) ON DELETE SET NULL,
  item_name TEXT NOT NULL,
  sale_price INTEGER NOT NULL DEFAULT 0,
  final_price INTEGER,
  platform sale_platform NOT NULL,
  status sale_status NOT NULL DEFAULT 'listing',
  notes TEXT,
  listed_at DATE NOT NULL,
  sold_at DATE,
  created_at TIMESTAMPTZ DEFAULT NOW() NOT NULL,
  updated_at TIMESTAMPTZ DEFAULT NOW() NOT NULL
);

-- ai_conversations table
CREATE TABLE ai_conversations (
  id UUID DEFAULT uuid_generate_v4() PRIMARY KEY,
  user_id UUID REFERENCES auth.users(id) ON DELETE CASCADE NOT NULL,
  title TEXT NOT NULL DEFAULT '새 대화',
  created_at TIMESTAMPTZ DEFAULT NOW() NOT NULL,
  updated_at TIMESTAMPTZ DEFAULT NOW() NOT NULL
);

-- ai_messages table
CREATE TABLE ai_messages (
  id UUID DEFAULT uuid_generate_v4() PRIMARY KEY,
  conversation_id UUID REFERENCES ai_conversations(id) ON DELETE CASCADE NOT NULL,
  role TEXT NOT NULL CHECK (role IN ('user', 'assistant')),
  content TEXT NOT NULL,
  created_at TIMESTAMPTZ DEFAULT NOW() NOT NULL
);

-- updated_at trigger function
CREATE OR REPLACE FUNCTION update_updated_at()
RETURNS TRIGGER AS $$
BEGIN
  NEW.updated_at = NOW();
  RETURN NEW;
END;
$$ LANGUAGE plpgsql;

-- Apply triggers
CREATE TRIGGER purchases_updated_at BEFORE UPDATE ON purchases
  FOR EACH ROW EXECUTE FUNCTION update_updated_at();

CREATE TRIGGER used_sales_updated_at BEFORE UPDATE ON used_sales
  FOR EACH ROW EXECUTE FUNCTION update_updated_at();

CREATE TRIGGER ai_conversations_updated_at BEFORE UPDATE ON ai_conversations
  FOR EACH ROW EXECUTE FUNCTION update_updated_at();

-- Row Level Security
ALTER TABLE purchases ENABLE ROW LEVEL SECURITY;
ALTER TABLE used_sales ENABLE ROW LEVEL SECURITY;
ALTER TABLE ai_conversations ENABLE ROW LEVEL SECURITY;
ALTER TABLE ai_messages ENABLE ROW LEVEL SECURITY;

-- RLS Policies: purchases
CREATE POLICY "Users can manage own purchases" ON purchases
  FOR ALL USING (auth.uid() = user_id);

-- RLS Policies: used_sales
CREATE POLICY "Users can manage own used_sales" ON used_sales
  FOR ALL USING (auth.uid() = user_id);

-- RLS Policies: ai_conversations
CREATE POLICY "Users can manage own conversations" ON ai_conversations
  FOR ALL USING (auth.uid() = user_id);

-- RLS Policies: ai_messages (via conversation ownership)
CREATE POLICY "Users can manage messages in own conversations" ON ai_messages
  FOR ALL USING (
    conversation_id IN (
      SELECT id FROM ai_conversations WHERE user_id = auth.uid()
    )
  );