"""Tests for the Injector target-resolution logic (no live HTTP)."""

from __future__ import annotations

from intelliscan.modules.crawler import CrawlResult, Form, UrlParam
from intelliscan.modules.injector import Injector


class _FakeHttp:
    """Minimal stand-in; target resolution never performs requests."""

    def get_csrf_token(self, url):  # pragma: no cover - unused in these tests
        return None


def _make_injector(crawl_result=None) -> Injector:
    return Injector(_FakeHttp(), "http://localhost:8080", crawl_result=crawl_result)


def test_falls_back_to_dvwa_when_no_crawl():
    inj = _make_injector(crawl_result=None)
    targets = inj._resolve_targets()
    assert targets, "expected DVWA fallback targets"
    assert all(t.source.startswith("dvwa") for t in targets)


def test_skips_state_mutating_forms():
    # security.php (changes the security level) and a password-change form must
    # never be injected — doing so corrupts the scan/session state mid-run.
    crawl = CrawlResult(
        target="http://localhost:8080",
        pages_visited=3,
        forms=[
            Form(
                url="http://localhost:8080/security.php",
                action="http://localhost:8080/security.php",
                method="POST",
                inputs=[{"name": "security", "type": "text", "value": ""}],
            ),
            Form(
                url="http://localhost:8080/vulnerabilities/csrf/",
                action="http://localhost:8080/vulnerabilities/csrf/",
                method="GET",
                inputs=[
                    {"name": "password_new", "type": "password", "value": ""},
                    {"name": "password_conf", "type": "password", "value": ""},
                ],
            ),
            Form(
                url="http://localhost:8080/vulnerabilities/sqli/",
                action="http://localhost:8080/vulnerabilities/sqli/",
                method="GET",
                inputs=[{"name": "id", "type": "text", "value": ""}],
            ),
        ],
        url_params=[],
    )
    inj = _make_injector(crawl)
    targets = inj._resolve_targets()
    urls = {t.url for t in targets}
    assert urls == {"http://localhost:8080/vulnerabilities/sqli/"}


def test_empty_crawl_does_not_fall_back_to_dvwa():
    # A supplied-but-empty crawl (blocked/unreachable target) must NOT fabricate
    # DVWA targets — that produced phantom findings from WAF/error pages.
    crawl = CrawlResult(
        target="https://blocked.example",
        pages_visited=0,
        forms=[],
        url_params=[],
        blocked_responses=1,
        start_reachable=False,
    )
    inj = _make_injector(crawl)
    assert inj._resolve_targets() == []


def test_resolves_form_inputs_and_skips_submit():
    crawl = CrawlResult(
        target="http://localhost:8080",
        pages_visited=1,
        forms=[
            Form(
                url="http://localhost:8080/login",
                action="http://localhost:8080/login",
                method="POST",
                inputs=[
                    {"name": "username", "type": "text", "value": ""},
                    {"name": "password", "type": "password", "value": ""},
                    {"name": "Login", "type": "submit", "value": "Login"},
                ],
            )
        ],
        url_params=[],
    )
    inj = _make_injector(crawl)
    targets = inj._resolve_targets()
    assert len(targets) == 1
    t = targets[0]
    assert t.source == "crawl-form"
    assert set(t.inject_params) == {"username", "password"}  # text fields
    assert t.static_fields == {"Login": "Login"}  # submit preserved


def test_resolves_url_params():
    crawl = CrawlResult(
        target="http://localhost:8080",
        pages_visited=1,
        forms=[],
        url_params=[UrlParam(url="http://localhost:8080/item?id=3&cat=2", params=["id", "cat"])],
    )
    inj = _make_injector(crawl)
    targets = inj._resolve_targets()
    assert len(targets) == 1
    t = targets[0]
    assert t.source == "crawl-param"
    assert t.method == "GET"
    assert t.url == "http://localhost:8080/item"  # query stripped
    assert "lfi" in t.vuln_types  # params probe LFI too


def test_build_tasks_pairs_payloads_with_targets():
    crawl = CrawlResult(
        target="http://localhost:8080",
        pages_visited=1,
        forms=[],
        url_params=[UrlParam(url="http://localhost:8080/x?q=1", params=["q"])],
    )
    inj = _make_injector(crawl)
    tasks = list(inj._build_tasks(inj._resolve_targets()))
    # Every task is (target, vuln_type, payload) and only uses loaded vuln types.
    assert tasks
    for target, vuln_type, payload in tasks:
        assert vuln_type in target.vuln_types
        assert isinstance(payload, str) and payload