#!/usr/bin/env python3
"""NAVIGATION lane — surface REACHABILITY + back-stack integrity for Aegis
Authenticator (TOTP/2FA). Sole owner of jump_kind="reach" and of depth>=2 chains.

Every jump is proven by and_reach(before, after, target, source): the TARGET
surface's discriminating element APPEARED and the SOURCE surface's element
DISAPPEARED. No element that was already in the tree is ever asserted as a
"reach". Reaching a screen by relaunching is NOT navigation — every chain
navigates from within the app via and_enter*/and_reach* calls that back the
declared depth.

Discriminators were read off the running app (uiautomator dump), because a
surface here is the SET of visible element keys, not the Activity:
  * Main toolbar title .......... 'AegisDev'
  * Overflow popup items ........ 'Settings', 'About'  (Main toolbar not in tree)
  * PreferencesActivity root .... title 'Settings' + 'Navigate up' + category rows
  * A settings SUB-screen ....... the 'Settings' title is REPLACED by the section
                                  title, so 'Settings' leaving + a section-only
                                  child appearing proves the deeper jump
  * Search active ............... 'Clear query' appears, 'AegisDev' leaves
  * FAB menu (overlay) .......... 'Enter manually' appears, 'AegisDev' stays
  * Add / Edit entry ............ title 'Add new entry' / 'Edit entry', 'AegisDev' gone

Run:
  python3 test_android_navigation.py <PACKAGE> <RESULTS_DIR>
"""
import os
import sys

sys.path.insert(0, os.path.dirname(os.path.abspath(__file__)))
from android_testgen_kit import *  # noqa: F403,F401


# ══════════════════════════════════════════════════════════════════════════════
# Entry-point + shared navigation helpers.
# The and_enter_<surface>() / and_reach_<target>() NAMES are what the depth audit
# looks for to back a depth>=1 / jump_kind="reach"; the implementations are ours.
# ══════════════════════════════════════════════════════════════════════════════

def and_enter_main():
    """Clean launch to MainActivity. Clears data so onboarding is deterministic,
    then skips it entirely by resource-id (portable to the recreation). Chooses
    rb_none so the vault never locks and every restart lands on Main."""
    clear_data()
    launch_app()
    wait_for_foreground()
    settle("launch")
    nodes = ui()
    if node_by_id(nodes, "btnNext"):
        tap_node(node_by_id(ui(), "btnNext"))     # Welcome -> Security
        tap_node(node_by_id(ui(), "rb_none"))     # None = no password
        tap_node(node_by_id(ui(), "btnNext"))     # Security -> Setup completed
        tap_node(node_by_id(ui(), "btnNext"))     # Setup completed -> Main
    return ui()


def on_main(nodes=None):
    """True iff the Main entry list is showing (toolbar title 'AegisDev')."""
    nodes = ui() if nodes is None else nodes
    return find_node(nodes, text="AegisDev") is not None


def on_settings_root(nodes=None):
    """True iff the Settings ROOT is showing: the 'Settings' title is present and
    at least two category rows are visible (a sub-screen shows neither)."""
    nodes = ui() if nodes is None else nodes
    return (find_node(nodes, text="Settings") is not None
            and find_node_ci(nodes, "Behavior") is not None
            and find_node_ci(nodes, "Security") is not None)


def _esc_hide_keyboard():
    """Dismiss the soft keyboard WITHOUT navigating. KEYCODE_ESCAPE closes the
    IME on this build but never pops the surface (BACK sometimes does), which the
    add-entry form is sensitive to."""
    if keyboard_visible():
        press_key("KEYCODE_ESCAPE")
        settle("keyboard")


def _fill_field(rid, text):
    """Focus an EditText by resource-id suffix and type ASCII into it, then drop
    the keyboard. Re-dumps to verify focus (an unfocused field swallows input)."""
    node = node_by_id(ui(), rid)
    if not node:
        return False
    tap_node(node)
    settle("keyboard")
    fresh = node_by_id(ui(), rid)
    if fresh and fresh.get("focused") != "true":
        tap_node(fresh)
        settle("keyboard")
    adb_shell("input", "text", text)
    settle("text")
    _esc_hide_keyboard()
    return True


def create_entry(name="TestAcc", secret="JBSWY3DPEHPK3PXP"):
    """Main -> FAB -> Enter manually -> fill name + secret -> SAVE. Returns True
    when a row (rlCardEntry) is present on Main afterwards. This is SETUP for the
    navigate-to-a-record tests; the creation itself is the interaction lane's."""
    tap_node(node_by_id(ui(), "fab"))
    settle("tap")
    enter = node_by_id(ui(), "fab_menu_item_enter")
    if not enter or not tap_node(enter):
        return False
    settle("launch")
    _fill_field("text_name", name)
    _fill_field("text_secret", secret)
    save = node_by_id(ui(), "action_save")
    if not save or not tap_node(save):
        return False
    settle("launch")
    return node_by_id(ui(), "rlCardEntry") is not None


def open_overflow():
    """Tap the toolbar 'More options' and return the fresh tree (the overflow
    popup shows only 'Settings' and 'About'; the Main toolbar leaves the tree)."""
    mo = find_node(ui(), content_desc="More options")
    if mo:
        tap_node(mo)
        settle("tap")
    return ui()


def and_reach_settings():
    """Main -> overflow -> Settings root. The overflow popup already contains a
    'Settings' menu item, so the ARRIVAL is proven by the PreferencesActivity's
    'Navigate up' affordance appearing and the sibling 'About' menu item leaving.
    Counts one surface."""
    open_overflow()
    item = find_node_ci(ui(), "Settings")
    return bool(item) and and_reach_surface(item, "Navigate up", "About")


# Each settings section echoes its name in BOTH the root row and the sub-screen
# title, so the title is NOT a valid "appeared" key. The reliable arrival proof
# is: the root 'Settings' title LEAVES (replaced by the section title) and a
# section-ONLY child element APPEARS. These children were read off each screen.
_SECTION_CHILD = {
    "Appearance": "Dynamic colors",
    "Behavior": "Haptic feedback",
    "Security": "Encryption",
    "Audit log": "No reported events",
    "Import": "Import from file",
    "Backups": "Automatic backups",
    "Icon packs": "No icon packs",
}


def and_reach_settings_section(label, child):
    """From the Settings ROOT, tap a category row and prove its sub-screen
    arrived: `child` (a section-only element) APPEARED and the root 'Settings'
    title LEFT. `label` is matched by prefix so the entity-escaped
    'Import &amp; Export' row resolves from 'Import'. Counts one surface."""
    trigger = None
    for n in ui():
        if n.get("resource-id", "").endswith("title") and \
                n.get("text", "").lower().startswith(label.lower()):
            trigger = n
            break
    if trigger is None:
        trigger = find_node_ci(ui(), label)
    if trigger is None:
        return False
    return and_reach_surface(trigger, child, "Settings")


# ══════════════════════════════════════════════════════════════════════════════
# Top-level destinations (depth 1)
# ══════════════════════════════════════════════════════════════════════════════

@and_test(expects=("navigation_open_overflow_menu",))
def test_open_overflow_menu():
    and_enter_main()
    before = and_showing()                            # Main (no Settings/About yet)
    mo = find_node(ui(), content_desc="More options")
    ok = False
    if mo:
        tap_node(mo)
        and_enter("overflow")
        after = and_showing()
        # The popup overlays Main; assert both items appeared and Main title left.
        ok = (and_reach(before, after, "Settings", "AegisDev")
              and find_node_ci(ui(), "About") is not None)
    record("navigation_open_overflow_menu", ok,
           "" if ok else "feature_missing: overflow menu with Settings/About not reachable",
           depth=1, jump_kind="reach",
           expect="Overflow popup 'Settings'/'About' appeared; Main 'AegisDev' title gone")


@and_test(expects=("navigation_reach_settings", "navigation_reach_settings_vlm"))
def test_reach_settings():
    and_enter_main()
    ok = and_reach_settings()
    record("navigation_reach_settings", ok,
           "" if ok else "behavior_wrong: Settings root not reached (no 'Navigate up' / 'About' stayed)",
           depth=1, jump_kind="reach",
           expect="PreferencesActivity 'Navigate up' appeared; overflow 'About' item gone")
    vlm_assert("navigation_reach_settings",
               "Is there a back/up arrow icon at the far top-left of the top app bar "
               "(to the left of the 'Settings' title)?",
               RESULTS_DIR, tag="position")


@and_test(expects=("navigation_reach_about", "navigation_reach_about_vlm"))
def test_reach_about():
    and_enter_main()
    open_overflow()
    item = find_node_ci(ui(), "About")
    # From the open overflow: About screen title appears, the 'Settings' menu
    # item (sibling in the popup) leaves.
    ok = bool(item) and and_reach_surface(item, "Aegis Authenticator", "Settings")
    record("navigation_reach_about", ok,
           "" if ok else "behavior_wrong: About not reached / overflow 'Settings' item stayed",
           depth=1, jump_kind="reach",
           expect="AboutActivity 'Aegis Authenticator' appeared; overflow 'Settings' item gone")
    vlm_assert("navigation_reach_about",
               "Is there a small app logo icon immediately to the LEFT of the "
               "'Aegis Authenticator' text, near the top of the screen?",
               RESULTS_DIR, tag="position")


@and_test(expects=("navigation_fab_menu_open", "navigation_fab_menu_open_vlm"))
def test_fab_menu_open():
    and_enter_main()
    before = and_showing()
    fab = node_by_id(ui(), "fab")
    ok = False
    if fab:
        tap_node(fab)
        and_enter("fab_menu")
        after = and_showing()
        # FAB menu is an overlay: 'AegisDev' stays, so assert the target only.
        ok = (and_reach(before, after, "Enter manually")
              and find_node_ci(ui(), "Scan QR code") is not None)
    record("navigation_fab_menu_open", ok,
           "" if ok else "feature_missing: FAB add-entry menu did not open",
           depth=1, jump_kind="reach",
           expect="FAB menu options 'Enter manually' and 'Scan QR code' appeared over Main")
    vlm_assert("navigation_fab_menu_open",
               "Are there three labelled rounded option cards ('Scan QR code', "
               "'Scan image', 'Enter manually') stacked vertically in the "
               "lower-right area of the screen?",
               RESULTS_DIR, tag="position")


@and_test(expects=("navigation_reach_add_entry", "navigation_reach_add_entry_vlm"))
def test_reach_add_entry():
    and_enter_main()
    tap_node(node_by_id(ui(), "fab"))
    settle("tap")
    and_enter("fab_menu")
    enter = node_by_id(ui(), "fab_menu_item_enter")
    # FAB menu -> Enter manually IS a real surface jump: the form title appears
    # and Main's 'AegisDev' (still behind the FAB overlay) leaves.
    ok = bool(enter) and and_reach_surface(enter, "Add new entry", "AegisDev")
    record("navigation_reach_add_entry", ok,
           "" if ok else "behavior_wrong: EditEntryActivity 'Add new entry' not reached",
           depth=2, jump_kind="reach",
           expect="EditEntryActivity 'Add new entry' shown; Main 'AegisDev' gone")
    vlm_assert("navigation_reach_add_entry",
               "Is there a 'SAVE' action button in the top-right area of the top app bar?",
               RESULTS_DIR, tag="position")


@and_test(expects=("navigation_search_open", "navigation_search_open_vlm"))
def test_search_open():
    and_enter_main()
    sb = node_by_id(ui(), "search_button")
    ok = False
    if sb:
        before = and_showing()
        tap_node(sb)
        and_enter("search")
        after = and_showing()
        # In-toolbar SearchView: the 'Clear query' button appears, 'AegisDev' goes.
        ok = and_reach(before, after, "Clear query", "AegisDev")
    record("navigation_search_open", ok,
           "" if ok else "behavior_wrong: in-toolbar search field did not appear",
           depth=1, jump_kind="reach",
           expect="SearchView 'Clear query' affordance appeared; toolbar 'AegisDev' gone")
    vlm_assert("navigation_search_open",
               "Does the top app bar now contain a wide text input field that spans "
               "most of the bar's width (a search box)?",
               RESULTS_DIR, tag="layout")


# ══════════════════════════════════════════════════════════════════════════════
# Depth-2 chains: Main -> Settings -> sub-screen  (navigation lane owns depth>=2)
# ══════════════════════════════════════════════════════════════════════════════

@and_test(expects=("navigation_reach_appearance", "navigation_reach_appearance_vlm"))
def test_reach_appearance():
    and_enter_main()
    deep = and_reach_settings()                              # hop 1 (depth 1)
    ok = deep and and_reach_settings_section("Appearance", _SECTION_CHILD["Appearance"])
    record("navigation_reach_appearance", ok,               # hop 2 (depth 2)
           "" if ok else "behavior_wrong: Settings->Appearance sub-screen not reached",
           depth=2, jump_kind="reach",
           expect="Appearance sub-screen 'Dynamic colors' appeared; Settings root title gone")
    vlm_assert("navigation_reach_appearance",
               "Is there a vertical list of settings rows, where each row has a "
               "label with a smaller grey description line beneath it?",
               RESULTS_DIR, tag="layout")


@and_test(expects=("navigation_reach_behavior",))
def test_reach_behavior():
    and_enter_main()
    deep = and_reach_settings()
    ok = deep and and_reach_settings_section("Behavior", _SECTION_CHILD["Behavior"])
    record("navigation_reach_behavior", ok,
           "" if ok else "behavior_wrong: Settings->Behavior sub-screen not reached",
           depth=2, jump_kind="reach",
           expect="Behavior sub-screen 'Haptic feedback' appeared; Settings root title gone")


@and_test(expects=("navigation_reach_security",))
def test_reach_security():
    and_enter_main()
    deep = and_reach_settings()
    ok = deep and and_reach_settings_section("Security", _SECTION_CHILD["Security"])
    record("navigation_reach_security", ok,
           "" if ok else "behavior_wrong: Settings->Security sub-screen not reached",
           depth=2, jump_kind="reach",
           expect="Security sub-screen 'Encryption' appeared; Settings root title gone")


@and_test(expects=("navigation_reach_audit_log",))
def test_reach_audit_log():
    and_enter_main()
    deep = and_reach_settings()
    ok = deep and and_reach_settings_section("Audit log", _SECTION_CHILD["Audit log"])
    record("navigation_reach_audit_log", ok,
           "" if ok else "behavior_wrong: Settings->Audit log sub-screen not reached",
           depth=2, jump_kind="reach",
           expect="Audit log sub-screen 'No reported events' appeared; Settings root title gone")


@and_test(expects=("navigation_reach_import_export",))
def test_reach_import_export():
    and_enter_main()
    deep = and_reach_settings()
    # Dump text is the entity-escaped 'Import &amp; Export'; match the row by the
    # 'Import' prefix and assert the section-only 'Import from file' arrived.
    ok = deep and and_reach_settings_section("Import", _SECTION_CHILD["Import"])
    record("navigation_reach_import_export", ok,
           "" if ok else "behavior_wrong: Settings->Import & Export sub-screen not reached",
           depth=2, jump_kind="reach",
           expect="Import & Export sub-screen 'Import from file' appeared; Settings root title gone")


@and_test(expects=("navigation_reach_backups",))
def test_reach_backups():
    and_enter_main()
    deep = and_reach_settings()
    ok = deep and and_reach_settings_section("Backups", _SECTION_CHILD["Backups"])
    record("navigation_reach_backups", ok,
           "" if ok else "behavior_wrong: Settings->Backups sub-screen not reached",
           depth=2, jump_kind="reach",
           expect="Backups sub-screen 'Automatic backups' appeared; Settings root title gone")


@and_test(expects=("navigation_reach_icon_packs",))
def test_reach_icon_packs():
    and_enter_main()
    deep = and_reach_settings()
    ok = deep and and_reach_settings_section("Icon packs", _SECTION_CHILD["Icon packs"])
    record("navigation_reach_icon_packs", ok,
           "" if ok else "behavior_wrong: Settings->Icon packs sub-screen not reached",
           depth=2, jump_kind="reach",
           expect="Icon packs sub-screen 'No icon packs' appeared; Settings root title gone")


# ══════════════════════════════════════════════════════════════════════════════
# Back-stack integrity — BACK unwinds hop by hop, deepest surface back to home
# ══════════════════════════════════════════════════════════════════════════════

@and_test(expects=("navigation_settings_back_to_main",))
def test_settings_back_to_main():
    and_enter_main()
    deep = and_reach_settings()                      # depth 1
    home = False
    if deep:
        before = and_showing()                       # Settings root
        and_back()                                   # pop Settings
        after = and_showing()
        home = and_reach(before, after, "AegisDev", "Settings") and on_main()
    record("navigation_settings_back_to_main", deep and home,
           "" if deep and home else "behavior_wrong: BACK from Settings did not restore Main",
           depth=1, jump_kind="reach",
           expect="Main 'AegisDev' restored and 'Settings' title gone after one BACK")


@and_test(expects=("navigation_appearance_back_to_settings",))
def test_appearance_back_to_settings():
    """Depth-2 chain, then ONE BACK must land on the Settings ROOT (depth 1), NOT
    jump straight to Main — proves the intermediate surface is on the back stack."""
    and_enter_main()
    deep = (and_reach_settings()
            and and_reach_settings_section("Appearance", _SECTION_CHILD["Appearance"]))
    to_settings = False
    if deep:
        before = and_showing()                       # Appearance sub-screen
        and_back()                                   # pop Appearance -> Settings root
        after = and_showing()
        # The 'Behavior' root row reappears; the section-only 'Dynamic colors'
        # leaves; and we are provably NOT on Main.
        to_settings = (and_reach(before, after, "Behavior", "Dynamic colors")
                       and on_settings_root() and not on_main())
    record("navigation_appearance_back_to_settings", deep and to_settings,
           "" if deep and to_settings else
           "behavior_wrong: BACK from Appearance did not return to the Settings root",
           depth=2, jump_kind="reach",
           expect="Settings root ('Behavior' row) restored after one BACK; 'Dynamic colors' gone; not Main")


@and_test(expects=("navigation_backstack_2hop_unwind",))
def test_backstack_2hop_unwind():
    """Main -> Settings -> Behavior, then two BACKs unwind it hop by hop:
    Behavior -> Settings root, then Settings root -> Main."""
    and_enter_main()
    deep = (and_reach_settings()
            and and_reach_settings_section("Behavior", _SECTION_CHILD["Behavior"]))
    step1 = step2 = False
    if deep:
        b1 = and_showing()                           # Behavior sub-screen
        and_back()                                   # Behavior -> Settings root
        a1 = and_showing()
        # Settings root re-shows the 'Appearance' row; 'Haptic feedback' leaves.
        step1 = (and_reach(b1, a1, "Appearance", "Haptic feedback")
                 and on_settings_root() and not on_main())
        b2 = and_showing()                           # Settings root
        and_back()                                   # Settings root -> Main
        a2 = and_showing()
        step2 = and_reach(b2, a2, "AegisDev", "Settings") and on_main()
    ok = deep and step1 and step2
    record("navigation_backstack_2hop_unwind", ok,
           "" if ok else "behavior_wrong: two BACKs did not unwind Behavior->Settings->Main",
           depth=2, jump_kind="reach",
           expect="BACK #1 restores Settings root ('Appearance' row); BACK #2 restores Main 'AegisDev'")


# ══════════════════════════════════════════════════════════════════════════════
# Navigate to a record created in setup: entry -> (long-press) edit -> BACK
# ══════════════════════════════════════════════════════════════════════════════

def and_reach_edit_entry():
    """From Main with a row present: long-press the row -> action mode ->
    action_edit -> EditEntryActivity 'Edit entry'. The Main title 'AegisDev'
    persists behind the contextual bar, so it is the disappearing source once
    the editor opens. Counts one surface."""
    row = node_by_id(ui(), "rlCardEntry")
    if not row:
        return False
    long_press(row)
    settle("tap")                                    # let the action mode animate in
    edit = node_by_id(ui(), "action_edit")
    if not edit:
        return False
    return and_reach_surface(edit, "Edit entry", "AegisDev")


@and_test(expects=("navigation_reach_edit_entry",))
def test_reach_edit_entry():
    and_enter_main()
    made = create_entry()                            # SETUP (interaction lane owns it)
    ok = made and and_reach_edit_entry()
    record("navigation_reach_edit_entry", ok,
           "" if ok else ("setup_failed: could not create an entry to edit"
                          if not made else
                          "behavior_wrong: long-press -> Edit did not reach 'Edit entry'"),
           depth=1, jump_kind="reach",
           expect="EditEntryActivity 'Edit entry' shown; Main 'AegisDev' gone")


@and_test(expects=("navigation_edit_entry_back_to_main",))
def test_edit_entry_back_to_main():
    and_enter_main()
    made = create_entry()
    reached = made and and_reach_edit_entry()        # depth 1 (Edit entry)
    home = False
    if reached:
        before = and_showing()
        and_back()                                   # pop Edit entry -> Main
        after = and_showing()
        home = and_reach(before, after, "AegisDev", "Edit entry") and on_main()
    ok = reached and home
    record("navigation_edit_entry_back_to_main", ok,
           "" if ok else ("setup_failed: could not reach the entry editor"
                          if not reached else
                          "behavior_wrong: BACK from 'Edit entry' did not restore Main"),
           depth=1, jump_kind="reach",
           expect="Main 'AegisDev' restored and 'Edit entry' gone after one BACK")


TESTS = [
    test_open_overflow_menu,
    test_reach_settings,
    test_reach_about,
    test_fab_menu_open,
    test_reach_add_entry,
    test_search_open,
    test_reach_appearance,
    test_reach_behavior,
    test_reach_security,
    test_reach_audit_log,
    test_reach_import_export,
    test_reach_backups,
    test_reach_icon_packs,
    test_settings_back_to_main,
    test_appearance_back_to_settings,
    test_backstack_2hop_unwind,
    test_reach_edit_entry,
    test_edit_entry_back_to_main,
]


if __name__ == "__main__":
    if not device_online():
        print("device offline — aborting")
        sys.exit(2)
    run_suite(TESTS, "navigation")