(eval-when (:compile-toplevel :load-toplevel :execute)
  (ql:quickload :fiveam :silent t)
  (ql:quickload :usocket :silent t))

(defpackage :passepartout-integration-tests
  (:use :cl :fiveam :passepartout)
  (:export #:integration-suite))

(in-package :passepartout-integration-tests)

(def-suite integration-suite :description "Integration tests across process boundaries")
(in-suite integration-suite)

(defvar *daemon-port* nil)

(defun find-free-port ()
  (let ((socket (usocket:socket-listen "127.0.0.1" 0 :reuse-address t)))
    (unwind-protect (usocket:get-local-port socket)
      (usocket:socket-close socket))))

(defmacro with-daemon (() &body body)
  `(let ((*daemon-port* (find-free-port)))
     (unwind-protect
          (progn
            (passepartout:actuator-initialize)
            (passepartout:skill-initialize-all)
            (passepartout:start-daemon :port *daemon-port*)
            (sleep 2)
            ,@body)
       (handler-case (passepartout:stop-daemon) (error ())))))

(defun daemon-connect ()
  (let* ((sock (usocket:socket-connect "127.0.0.1" *daemon-port*))
         (stream (usocket:socket-stream sock)))
    (read-framed-message stream)  ;; discard handshake
    (values stream sock)))

(defun daemon-send (stream msg)
  (write-string (frame-message msg) stream)
  (finish-output stream))

(defun daemon-recv (stream &key (timeout 5))
  (let ((deadline (+ (get-universal-time) timeout)))
    (loop
      (when (listen stream)
        (return (read-framed-message stream)))
      (when (> (get-universal-time) deadline) (return nil))
      (sleep 0.1))))

(test test-daemon-starts
  "Contract 1: daemon binds port and sends valid handshake."
  (with-daemon ()
    (multiple-value-bind (stream sock) (daemon-connect)
      (is (open-stream-p stream))
      (usocket:socket-close sock))))

(test test-pipeline-user-input
  "Contract 2: :user-input traverses pipeline and produces a response."
  (with-daemon ()
    (multiple-value-bind (stream sock) (daemon-connect)
      (unwind-protect
           (progn
             (daemon-send stream
              '(:TYPE :EVENT :PAYLOAD (:SENSOR :user-input :TEXT "test")))
             (let ((resp (daemon-recv stream :timeout 10)))
               (is (not (null resp)) "Expected a response")))
        (usocket:socket-close sock)))))

(test test-pipeline-heartbeat
  "Contract 2: heartbeat signals do not crash the daemon."
  (with-daemon ()
    (multiple-value-bind (stream sock) (daemon-connect)
      (unwind-protect
           (daemon-send stream
            '(:TYPE :EVENT :PAYLOAD (:SENSOR :heartbeat)))
        (usocket:socket-close sock))
      (pass))))

(test test-tcp-round-trip
  "Contract 3: framed health-check survives TCP round-trip."
  (with-daemon ()
    (multiple-value-bind (stream sock) (daemon-connect)
      (unwind-protect
           (progn
             (daemon-send stream '(:TYPE :health-check))
             (let ((resp (daemon-recv stream :timeout 5)))
               (is (not (null resp)))
               (is (member (getf resp :type) '(:HEALTH-RESPONSE)))))
        (usocket:socket-close sock)))))

(test test-daemon-survives-junk
  "Contract 3: daemon does not crash on junk input."
  (with-daemon ()
    (multiple-value-bind (stream sock) (daemon-connect)
      (write-string "ZZZZZZ" stream)
      (finish-output stream)
      (sleep 1)
      (usocket:socket-close sock))
    ;; Connect again to verify daemon is still alive
    (multiple-value-bind (stream2 sock2) (daemon-connect)
      (is (open-stream-p stream2))
      (usocket:socket-close sock2))))

(test test-skill-registry-populated
  "Contract 4: *skill-registry* is populated after daemon start."
  (with-daemon ()
    (is (hash-table-p passepartout::*skill-registry*))
    (is (>= (hash-table-count passepartout::*skill-registry*) 1)
        "Expected at least 1 skill in registry, got ~a"
        (hash-table-count passepartout::*skill-registry*))))

(test test-shell-safe-echo
  "Contract 5: safe shell command does not crash the daemon."
  (with-daemon ()
    (multiple-value-bind (stream sock) (daemon-connect)
      (unwind-protect
           (daemon-send stream
            '(:TYPE :REQUEST :TARGET :shell
              :PAYLOAD (:ACTION :execute :CMD "echo hello")))
        (usocket:socket-close sock))
      (pass))))

(test test-shell-dangerous-blocked
  "Contract 5: rm -rf / is blocked by the security dispatcher."
  (with-daemon ()
    (multiple-value-bind (stream sock) (daemon-connect)
      (unwind-protect
           (daemon-send stream
            '(:TYPE :REQUEST :TARGET :shell
              :PAYLOAD (:ACTION :execute :CMD "rm -rf /")))
        (usocket:socket-close sock))
      (pass))))

(test test-cli-gateway-input
  "Contract 6: text via TCP produces a response."
  (with-daemon ()
    (multiple-value-bind (stream sock) (daemon-connect)
      (unwind-protect
           (daemon-send stream
            '(:TYPE :EVENT :META (:SOURCE :CLI)
              :PAYLOAD (:SENSOR :user-input :TEXT "hello from CLI")))
        (usocket:socket-close sock))
      (pass))))

(test test-gateway-registry
  "Contract 7: gateway-registry-initialize is available."
  (with-daemon ()
    (is (fboundp 'gateway-registry-initialize))
    (gateway-registry-initialize)
    (pass)))