#!/usr/bin/env python3
from __future__ import annotations

import re
from pathlib import Path

ROOT = Path(__file__).resolve().parents[1]


def read(path: str) -> str:
    return (ROOT / path).read_text()


def query_sql(backend: str, name: str) -> str:
    source = read(f"src/queries/{backend}.rs")
    match = re.search(
        rf'Query::{re.escape(name)}\s*=>\s*\{{\s*r#"(.*?)"#\s*\}}',
        source,
        re.S,
    )
    if not match:
        raise AssertionError(f"{backend}: Query::{name} missing")
    return match.group(1)


def main() -> None:
    names = {
        "SHARE_LINK_INSERT": 7,
        "SHARE_LINK_UPDATE": 6,
        "SHARE_LINK_PERMISSION": 3,
        "SHARE_LINK_SESSION_SOURCE": 3,
        "SHARE_SESSION_INSERT": 5,
        "SHARE_SESSION_PERMISSION": 3,
        "SHARE_SESSIONS_DELETE_BY_LINK": 3,
        "SHARE_SESSIONS_DELETE_EXPIRED": 1,
    }
    for backend in ("sqlite", "mysql"):
        for name, expected in names.items():
            sql = query_sql(backend, name)
            assert sql.count("?") == expected, (backend, name, sql)
    for name, expected in names.items():
        sql = query_sql("postgres", name)
        parameters = [int(value) for value in re.findall(r"\$(\d+)", sql)]
        assert sorted(set(parameters)) == list(range(1, expected + 1)), (name, sql)

    auth = read("src/auth/mod.rs")
    register_response = auth[auth.index("pub struct RegisterResponse"):auth.index("pub async fn identity")]
    assert "token:" not in register_response
    assert ".bind(&token)" not in auth[auth.index("pub async fn create_share_link"):auth.index("pub async fn update_share_link")]
    assert '"token":row.token' not in auth
    assert "token: Option<String>" not in auth[auth.index("struct SharingLinkRow"):auth.index("struct ShareLinkSessionSource")]
    assert "normalize_share_expiration" in auth
    assert "SHARE_SESSIONS_DELETE_BY_LINK" in auth
    assert "share_session_permission" in auth
    assert "invalid share session expiration in database" in auth
    assert "invalid share session permission in database" in auth
    assert "valid_share_token" in auth
    assert 'format!("share-session-client:{client_key}")' in auth
    create_link = auth[auth.index("pub async fn create_share_link"):auth.index("pub async fn update_share_link")]
    assert "no-store, max-age=0" in create_link
    assert '"token_hash":token_hash' in create_link
    assert '"token":token' not in create_link
    assert '"label":label' in create_link
    create_session = auth[auth.index("pub async fn create_share_session"):auth.index("async fn share_session_permission")]
    assert "existing_session_token" not in create_session
    assert 'source.permission == "ro"' not in create_session
    assert "resource_is_public_unprotected(state, kind, slug).await?" in create_session
    assert create_session.index("resource_is_public_unprotected") < create_session.index("valid_share_token")
    create_link = auth[auth.index("pub async fn create_share_link"):auth.index("pub async fn update_share_link")]
    update_link = auth[auth.index("pub async fn update_share_link"):auth.index("pub async fn revoke_share_link")]
    revoke_link = auth[auth.index("pub async fn revoke_share_link"):auth.index("fn validate_permission")]
    for management_handler in (create_link, update_link, revoke_link):
        assert "ensure_share_links_enabled" in management_handler
    assert "Direct share links are disabled for public resources without a password." in auth
    share_access = auth[auth.index("pub async fn share_access_permission"):auth.index("pub async fn share_link_permission")]
    assert "resource_is_public_unprotected(state, kind, slug).await?" in share_access
    sharing = auth[auth.index("pub async fn resource_sharing"):auth.index("pub async fn create_share_link")]
    assert '"share_links_enabled":share_links_enabled' in sharing
    assert "if share_links_enabled" in sharing
    assert "Vec::new()" in sharing
    privacy = auth[auth.index("pub async fn set_resource_privacy"):auth.index("pub async fn share_resource_users")]
    assert "SHARE_LINK" not in privacy
    assert "SHARE_SESSION" not in privacy

    api = read("src/api/mod.rs")
    assert "combined_token_access_level" not in api
    request_access = api[api.index("async fn request_access_level"):api.index("fn access_level_name")]
    for required in ("share_session_token", "resource_token", "authorization_token", "account_token_access_level"):
        assert required in request_access

    access_tokens = read("src/api/access_tokens.rs")
    assert "verify_password_access_token" in access_tokens
    assert "verify_resource_access_token" not in access_tokens
    assert "workspace.password_hash.is_some()" in access_tokens
    assert "pad.password_hash.is_some()" in access_tokens

    database = read("src/db/mod.rs")
    workspace_password = database[database.index("pub fn verify_workspace_password"):database.index("pub async fn list_notes")]
    pad_password = database[database.index("pub fn verify_pad_password"):database.index("pub async fn save_pad_revision")]
    assert "(None, _) => false" in workspace_password
    assert "(None, _) => false" in pad_password
    assert "missing_password_does_not_grant_password_access" in database

    websocket = read("src/websocket/mod.rs") + read("src/websocket/pad.rs")
    assert "cookie_share_session_token" in websocket
    assert "cookie_password_token" in websocket
    assert "explicit_access_token.or(" not in websocket
    assert "verify_password_access_token" in websocket
    assert "Access expired or revoked" in websocket
    assert "access_refresh" in websocket
    assert websocket.count("update=updates.recv()=>{") == 2
    assert websocket.count('message:"Access expired or revoked"') >= 6
    current_access = read("src/websocket/mod.rs")[read("src/websocket/mod.rs").index("async fn current_resource_access"):read("src/websocket/mod.rs").index("// Merged from note.rs")]
    assert "resource_is_public_unprotected(state, kind, slug)" in current_access
    assert "public_unprotected: bool" not in current_access

    pages = read("src/app/pages.rs")
    assert "canonical_resource_url" in pages
    assert "RawQuery" in pages
    assert "share_token_from_query" in pages
    assert "decode_query_component" in pages
    assert "share_session_cookie" in pages
    assert "Ok(None) => None" in pages
    assert "clear_share_session_cookie" not in pages
    assert "no-store, max-age=0" in pages
    assert "no-referrer" in pages
    assert 'decode_query_component(name).as_deref() != Some("share")' in pages

    security = read("src/security.rs")
    assert "__Host-rustpad_share_" in security
    assert "HttpOnly; Secure; SameSite=Lax" in security
    assert "clear_share_session_cookie" not in security

    for backend in ("sqlite", "postgres", "mysql"):
        sharing_list = query_sql(backend, "RESOURCE_SHARING_LINKS")
        assert not re.search(r"(?:^|,)\s*(?:CAST\()?token\b", sharing_list)
        legacy_migration = read(f"migrations/{backend}/0012_share_link_tokens.sql")
        assert "ADD COLUMN token" not in legacy_migration
        migration = read(f"migrations/{backend}/0026_share_link_sessions.sql")
        assert "resource_share_links SET token" not in migration
        assert "session_token_hash" in migration
        assert "ON DELETE CASCADE" in migration
        label_migration = read(f"migrations/{backend}/0027_share_link_labels.sql")
        assert "ADD COLUMN label" in label_migration

    home_js = read("static/js/home.js")
    assert "createdLinkValues" in home_js
    assert "result.token_hash" in home_js
    assert "data-copy-link" in home_js
    assert "The full address is not stored" in home_js
    assert 'name="label"' in home_js
    assert "token_hash: linkRow.dataset.linkTokenHash" in home_js
    assert "Link created, displayed below and copied." in home_js
    assert "data-direct-links-disabled" in home_js
    assert "d.share_links_enabled !== false" in home_js
    assert "Existing links are preserved and become active again" in home_js

    workspace_js = read("static/js/workspace.js")
    note_js = read("static/js/note-editor.js")
    assert 'info.access_level === "none"' in workspace_js
    assert note_js.count('info.access_level === "none"') >= 2

    main_rs = read("src/main.rs")
    assert "https://git.linuxiarz.pl/gru/rustpad/src/branch/master/LICENSE.md" in main_rs

    app = read("src/app/mod.rs")
    assert "PathOnlyMakeSpan" in app
    assert "request.uri().path()" in app
    assert "TraceLayer::new_for_http().make_span_with(PathOnlyMakeSpan)" in app

    print("share session static regression tests: passed")


if __name__ == "__main__":
    main()