stage 0 database schema ready

backend/db/config/queries.txt

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+-- ============================================================================
+-- 1. AUTHENTICATION & USERS
+-- ============================================================================
+
+-- name: CreateUser :execresult
+INSERT INTO users (username, password_hash) 
+VALUES (?, ?);
+
+-- name: UpdateUserPasswordByUserName :exec
+UPDATE users 
+SET password_hash = ? 
+WHERE username = ?;
+
+-- name: GetUserByUsername :one
+SELECT id, username, password_hash, created_at 
+FROM users 
+WHERE username = ? LIMIT 1;
+
+-- name: GetUserIdByUsername :one
+SELECT id 
+FROM users 
+WHERE username = ? LIMIT 1;
+
+-- ============================================================================
+-- 2. AIRPORT CORE MANAGEMENT
+-- ============================================================================
+
+-- airport row management
+
+-- name: CreateAirportByUserName :execresult
+INSERT INTO airports (name, user_id, origin_country_id) 
+VALUES (?, (SELECT id FROM users WHERE username = ?), ?);
+
+
+-- name: GetAirportByUserId :one
+SELECT id, name, user_id, origin_country_id, cash, current_passengers, max_passenger_capacity, current_fuel, max_fuel_capacity, is_available, player_level, experience_points, passenger_generation_rate, fuel_generation_rate, resources_last_updated_at
+FROM airports 
+WHERE user_id = ? LIMIT 1;
+-- name: GetAirportByUserName :one
+SELECT id, name, user_id, origin_country_id, cash, current_passengers, max_passenger_capacity, current_fuel, max_fuel_capacity, is_available, player_level, experience_points ,passenger_generation_rate, fuel_generation_rate, resources_last_updated_at
+FROM airports 
+WHERE user_id = (SELECT id FROM users WHERE username = ?) LIMIT 1;
+
+
+-- airport resource management
+
+
+-- name: UpdateAirportCurrencies :exec
+UPDATE airports 
+SET cash = ?, 
+    current_passengers = ?, 
+    current_fuel = ?
+WHERE id = ?;
+
+-- name: UpdateAirportCash :exec
+UPDATE airports 
+SET cash = ?
+WHERE id = ?;
+-- name: UpdateAirportpassengers :exec
+UPDATE airports 
+SET current_passengers = ?
+WHERE id = ?;
+-- name: UpdateAirportFuel :exec
+UPDATE airports 
+SET current_fuel = ?
+WHERE id = ?;
+-- name: UpdateAirportmaxPassengers :exec
+UPDATE airports 
+SET max_passenger_capacity = ?
+WHERE id = ?;
+-- name: UpdateAirportMaxFuel :exec
+UPDATE airports 
+SET max_fuel_capacity = ?
+WHERE id = ?;
+
+-- name: UpdateAirportFuelRate :exec
+UPDATE airports 
+SET fuel_generation_rate = ?
+WHERE id = ?;
+-- name: UpdateAirportPassengerRate :exec
+UPDATE airports 
+SET passenger_generation_rate = ?
+WHERE id = ?;
+
+-- name: UpdateAirportResourcesUpdated :exec
+update airports
+set resources_last_updated_at = ?
+where id = ?;
+
+
+-- name: updatePlayerExperience :exec
+UPDATE airports 
+SET experience_points =  ?,
+WHERE id = ?;
+
+-- name: updatePlayerLevel :exec
+UPDATE airports 
+SET player_level =  ?
+WHERE id = ?;
+
+
+
+-- ============================================================================
+-- 3. WAREHOUSE & INVENTORY SYSTEM
+-- ============================================================================
+
+
+-- ============================================================================
+-- 4. BUILDINGS & PRODUCTION ENGINE
+-- ============================================================================
+
+-- name: addStorageBuilding:execresult
+INSERT INTO buildings (name,min_level,construction_cost_cash,capacity,storage_type,storage_subtype)
+VALUES (?, ?, ?, ?, ?, ?);
+
+-- name: addOperationalBuilding:execresult
+INSERT INTO buildings (name,min_level,construction_cost_cash,operation_type,operation_size)
+VALUES (?, ?, ?, ?, ?);
+
+-- name: addPassiveProductionBuilding:execresult
+INSERT INTO buildings (name,min_level,construction_cost_cash,currency_type,income_rate)
+VALUES (?, ?, ?, ?, ?);
+
+-- name: addProductionBuilding:execresult
+INSERT INTO buildings (name,min_level,construction_cost_cash,recipe_id,storage_1,storage_2,storage_3)
+VALUES (?, ?, ?, ?, ?, ?, ?);
+
+
+-- name: AddBuildingToAirport :execresult
+INSERT INTO airport_buildings (airport_id, building_id, level) 
+VALUES ((select id from airports where user_id = (select id from users where username = ?)), ?, 1);
+
+-- name: GetAirportBuildings :many
+SELECT ab.id AS airport_building_id, ab.level, b.*
+FROM airport_buildings ab
+JOIN buildings b ON ab.building_id = b.id
+WHERE ab.airport_id = (select id from airports where user_id = (select id from users where username = ?));
+
+-- ============================================================================
+-- 5. FLEET & DYNAMIC INFRASTRUCTURE OPERATIONS
+-- ============================================================================
+
+-- name: BuyPlaneForPlayer :execresult
+INSERT INTO player_planes (airport_id, plane_id, assigned_hangar_id, current_building_id, status) 
+VALUES (?, ?, ?, ?, 'idle');
+
+-- name: GetPlayerFleet :many
+SELECT pp.id AS player_plane_id, pp.status, pp.updated_at, pp.flight_start_time, pp.current_building_id, pp.assigned_hangar_id, pp.assigned_cargo_id,
+       p.*
+FROM player_planes pp
+JOIN planes p ON pp.plane_id = p.id
+WHERE pp.airport_id = ?;
+
+-- name: FindAvailableInfrastructure :one
+SELECT ab.id
+FROM airport_buildings ab
+JOIN buildings b ON ab.building_id = b.id
+LEFT JOIN player_planes pp ON ab.id = pp.current_building_id
+WHERE ab.airport_id = ? 
+  AND b.operation_type = ?       -- 'runway' or 'service' (service bay)
+  AND b.operation_size = ?       -- matches plane's aircraft_size requirement
+  AND pp.id IS NULL              -- Ensures no other plane is physically here right now
+LIMIT 1;
+
+-- name: UpdatePlaneState :exec
+UPDATE player_planes 
+SET current_building_id = ?, 
+    status = ?, 
+    assigned_cargo_id = ?,
+    flight_start_time = ?
+WHERE id = ?;
+
+-- name: CheckHangarOccupancy :one
+SELECT COUNT(*) AS total_parked 
+FROM player_planes 
+WHERE current_building_id = ?;
+
+
+-- ============================================================================
+-- 6. TIME-BASED FLIGHT ENGINE
+-- ============================================================================
+
+-- name: GetPlanesReadyToLand :many
+SELECT pp.id AS player_plane_id, pp.airport_id, pp.assigned_hangar_id,
+       p.completed_flight_experience, p.completed_flight_cash_reward, p.completed_flight_cargo_reward, p.operation_type, pp.assigned_cargo_id
+FROM player_planes pp
+JOIN planes p ON pp.plane_id = p.id
+WHERE pp.status = 'flying' 
+  -- Uses your logic: flight_start_time + plane travel duration <= current clock
+  AND ADDTIME(pp.flight_start_time, p.travel_time) <= NOW();
+
+
+-- ============================================================================
+-- 7. PROGRESSION CONTRACTS & ECONOMY LOGS
+-- ============================================================================
+
+-- name: GetActiveContracts :many
+SELECT id, title, required_product_id, required_amount, current_amount_delivered, is_completed, expires_at 
+FROM airport_contracts 
+WHERE airport_id = ? AND is_completed = FALSE AND expires_at > NOW();
+
+-- name: UpdateContractDelivery :exec
+UPDATE airport_contracts 
+SET current_amount_delivered = current_amount_delivered + ?
+WHERE id = ? AND is_completed = FALSE;
+
+-- name: CompleteContract :exec
+UPDATE airport_contracts 
+SET is_completed = TRUE 
+WHERE id = ?;
+
+-- name: LogCurrencyTransaction :exec
+INSERT INTO currency_transaction_logs (airport_id, amount_changed, currency_type, reason) 
+VALUES (?, ?, ?, ?);
+
+-- name: LogCompletedFlightRoute :exec
+INSERT INTO completed_flight_routes_log (origin_airport_id, destination_country_id, start_time, end_time)
+VALUES (?, ?, ?, NOW());