"""Integration de l'assistant IA dans un onglet terminal : menu (active/desactive
selon la selection), panneau lateral cree a la demande dans le splitter (meme
mecanisme que le panneau SFTP), et generation de commande (jamais executee
automatiquement, avec avertissement si dangereuse).

LocalTerminalConnection.start() est neutralisee comme dans test_snippets.py :
aucun sous-processus reel, send() depose seulement les octets dans une file."""
import pathlib
import sys

sys.path.insert(0, str(pathlib.Path(__file__).resolve().parent.parent))

from unittest.mock import patch

from PySide6.QtCore import QCoreApplication
from PySide6.QtWidgets import QApplication

from app.ai.provider import AIProvider
from app.dialogs.ai_prompts import SEND
from app.local_terminal import LocalTerminalConnection
from app.ui.ai_panel import AIPanel
from app.ui.tabs import LocalTerminalTabWidget

app = QApplication.instance() or QApplication(sys.argv)

NOTICE_OK = patch("app.ui.ai_panel.ensure_ai_notice_acknowledged", return_value=True)
SEND_ASIS = patch("app.ui.ai_panel.confirm_sensitive_content", return_value=SEND)
PROMPTS_OK_IN_TABS = patch("app.ui.tabs.ensure_ai_notice_acknowledged", return_value=True)
SEND_ASIS_IN_TABS = patch("app.ui.tabs.confirm_sensitive_content", return_value=SEND)


class FakeProvider(AIProvider):
    def __init__(self, reply="reponse"):
        self.reply = reply

    def chat(self, messages, *, temperature=None):
        return self.reply


def pump(ms=3000):
    import time
    deadline = time.time() + ms / 1000
    while time.time() < deadline:
        QCoreApplication.processEvents()
        time.sleep(0.01)


def make_tab(ai_provider_factory=None):
    return LocalTerminalTabWidget(ai_provider_factory=ai_provider_factory)


print("=== 1. Menu IA : actions desactivees sur un terminal vraiment vide (rien affiche, rien selectionne) ===")
with patch.object(LocalTerminalConnection, "start", lambda self: None):
    tab = make_tab()
    assert not tab.terminal.has_selection()
    assert tab.terminal.visible_text() == ""
    menu = tab._build_ai_menu()
    labels = [a.text() for a in menu.actions() if a.text()]
    print("  actions:", labels)
    assert "Expliquer cette sortie" in labels
    assert "Generer une commande..." in labels
    for text in ("Expliquer cette sortie", "Diagnostiquer cette erreur", "Proposer une solution"):
        action = next(a for a in menu.actions() if a.text() == text)
        assert not action.isEnabled(), f"{text} devrait etre desactive : rien a analyser"
    # "Poser une question" reste utilisable sans rien : le contexte est optionnel
    ask_action = next(a for a in menu.actions() if a.text() == "Poser une question...")
    assert ask_action.isEnabled()
    generate_action = next(a for a in menu.actions() if a.text() == "Generer une commande...")
    assert generate_action.isEnabled(), "Generer une commande ne necessite pas de selection"
    tab.close_connection()
print("  OK")

print()
print("=== 2. Menu IA : actions activees des qu'il y a du texte visible, meme sans selection ===")
with patch.object(LocalTerminalConnection, "start", lambda self: None):
    tab = make_tab()
    tab.terminal.feed(b"erreur : connection refused\r\n")
    assert not tab.terminal.has_selection()
    assert tab.terminal.visible_text().strip()
    menu = tab._build_ai_menu()
    for text in ("Expliquer cette sortie", "Diagnostiquer cette erreur", "Proposer une solution", "Poser une question..."):
        action = next(a for a in menu.actions() if a.text() == text)
        assert action.isEnabled(), f"{text} devrait etre active : l'ecran visible sert de repli"
    tab.close_connection()
print("  OK")

print()
print("=== 2bis. 'Expliquer cette sortie' sans selection : se rabat sur l'ecran visible ===")
with patch.object(LocalTerminalConnection, "start", lambda self: None):
    provider = FakeProvider(reply="Ceci indique une connexion refusee.")
    tab = make_tab(ai_provider_factory=lambda: provider)
    tab.terminal.feed(b"erreur : connection refused\r\n")
    assert not tab.terminal.has_selection(), "ce test verifie precisement le cas SANS selection"
    with NOTICE_OK, SEND_ASIS:
        tab._ai_explain()
        pump()
    assert isinstance(tab.ai_panel, AIPanel)
    conversation = tab.ai_panel.conversation.toPlainText()
    print("  conversation:", conversation)
    assert "connection refused" in conversation.lower()  # le texte envoye est bien celui de l'ecran
    assert "connexion refusee" in conversation.lower()  # et la reponse simulee est bien affichee
    tab.close_connection()
print("  OK")

print()
print("=== 2ter. Une selection existante reste prioritaire sur l'ecran visible ===")
with patch.object(LocalTerminalConnection, "start", lambda self: None):
    provider = FakeProvider(reply="reponse")
    tab = make_tab(ai_provider_factory=lambda: provider)
    tab.terminal.feed(b"ligne 1 sans rapport\r\nerreur precise\r\n")
    tab.terminal._sel_anchor, tab.terminal._sel_focus = (0, 1), (13, 1)
    assert tab.terminal.selected_text() == "erreur precise"
    with NOTICE_OK, SEND_ASIS:
        tab._ai_explain()
        pump()
    conversation = tab.ai_panel.conversation.toPlainText()
    print("  conversation:", conversation)
    assert "erreur precise" in conversation.lower()
    assert "ligne 1 sans rapport" not in conversation.lower()
    tab.close_connection()
print("  OK")

print()
print("=== 3. 'Expliquer cette sortie' : cree le panneau IA dans le splitter et lance la requete ===")
with patch.object(LocalTerminalConnection, "start", lambda self: None):
    provider = FakeProvider(reply="Ceci indique une connexion refusee.")
    tab = make_tab(ai_provider_factory=lambda: provider)
    tab.terminal.feed(b"erreur : connection refused\r\n")
    tab.terminal._sel_anchor, tab.terminal._sel_focus = (0, 0), (10, 0)
    assert tab.ai_panel is None
    with NOTICE_OK, SEND_ASIS:
        tab._ai_explain()
        pump()
    assert isinstance(tab.ai_panel, AIPanel)
    assert tab.splitter.indexOf(tab.ai_panel) >= 0
    assert "connexion refusee" in tab.ai_panel.conversation.toPlainText().lower()
    tab.close_connection()
print("  OK")

print()
print("=== 4. Basculer l'affichage du panneau IA (menu) ===")
with patch.object(LocalTerminalConnection, "start", lambda self: None):
    tab = make_tab(ai_provider_factory=lambda: FakeProvider())
    tab.show()  # isVisible() se compose avec les ancetres : il en faut un reellement affiche
    tab._toggle_ai_panel()  # premiere fois : cree + affiche
    assert tab.ai_panel is not None and tab.ai_panel.isVisible()
    tab._toggle_ai_panel()  # deuxieme fois : masque
    assert not tab.ai_panel.isVisible()
    tab.close_connection()
print("  OK")

print()
print("=== 5. Generer une commande : jamais auto-execute, insertion sans Entree ===")
with patch.object(LocalTerminalConnection, "start", lambda self: None):
    provider = FakeProvider(reply="Pour lister les gros fichiers :\n\n```bash\nfind / -size +100M\n```")
    tab = make_tab(ai_provider_factory=lambda: provider)
    with PROMPTS_OK_IN_TABS, SEND_ASIS_IN_TABS, \
         patch("app.ui.tabs.QInputDialog.getMultiLineText", return_value=("trouver les gros fichiers", True)), \
         patch("app.ui.tabs.AICommandDialog.exec", lambda self: (setattr(self, "insert_requested", True), 1)[1]):
        tab._ai_generate_command()
        pump()
    sent = tab.connection._out_queue.get_nowait()
    print("  commande inseree:", sent)
    assert sent == b"find / -size +100M"
    assert not sent.endswith(b"\r") and not sent.endswith(b"\n")
    assert tab.ai_btn.isEnabled() and tab.ai_btn.text() == "🤖 Assistant IA"
    tab.close_connection()
print("  OK")

print()
print("=== 6. Generer une commande : annulee par l'utilisateur -> rien envoye ===")
with patch.object(LocalTerminalConnection, "start", lambda self: None):
    provider = FakeProvider(reply="```bash\nrm -rf /\n```")
    tab = make_tab(ai_provider_factory=lambda: provider)
    with patch("app.ui.tabs.QInputDialog.getMultiLineText", return_value=("", False)):
        tab._ai_generate_command()
    assert tab.connection._out_queue.empty()
    tab.close_connection()
print("  OK")

print()
print("=== 7. Sans fournisseur configure : message clair, pas de boite de saisie ===")
with patch.object(LocalTerminalConnection, "start", lambda self: None):
    tab = make_tab(ai_provider_factory=lambda: None)
    with patch("app.ui.tabs.QInputDialog.getMultiLineText") as mocked_input, \
         patch("app.ui.tabs.QMessageBox.information") as mocked_info:
        tab._ai_generate_command()
        assert not mocked_input.called
        assert mocked_info.called
    tab.close_connection()
print("  OK")

print()
print("=== 8. Fermeture de l'onglet : le panneau IA est arrete proprement ===")
with patch.object(LocalTerminalConnection, "start", lambda self: None):
    tab = make_tab(ai_provider_factory=lambda: FakeProvider())
    tab._toggle_ai_panel()
    tab.close_connection()  # ne doit pas lever, ni bloquer indefiniment
print("  OK")

print()
print("AI TAB INTEGRATION : TOUS LES TESTS OK")