"""Télémétrie d'usage GUI V6 — payload RGPD-safe + envoi non bloquant.

Aucun nom/chemin de fichier ne doit sortir. L'échec réseau ne doit jamais
faire échouer le traitement.
"""

from __future__ import annotations

import json

import pytest

from gui_v6.usage_telemetry import (
    UsageTelemetryClient,
    build_usage_payload,
    flush_spool,
    new_run_id,
    page_count_for,
    spool_payload,
)


# --- page_count_for ---------------------------------------------------------

def test_page_count_image_is_one():
    assert page_count_for("scan.PNG") == 1
    assert page_count_for("photo.jpeg") == 1


def test_page_count_unknown_is_none():
    assert page_count_for("note.txt") is None
    assert page_count_for("doc.docx") is None


def test_page_count_pdf_uses_counter_and_never_raises():
    assert page_count_for("x.pdf", pdf_counter=lambda p: 7) == 7

    def boom(_p):
        raise RuntimeError("corrompu")

    assert page_count_for("x.pdf", pdf_counter=boom) is None


# --- build_usage_payload ----------------------------------------------------

def test_payload_counts_and_no_filename_leak():
    documents = [
        {"ordinal": 0, "page_count": 5, "status": "success", "extension": "pdf",
         "filename": "LETTRE 23070126.pdf", "path": "/home/dom/secret.pdf"},
        {"ordinal": 1, "page_count": 3, "status": "success"},
        {"ordinal": 2, "page_count": None, "status": "failed"},
    ]
    payload = build_usage_payload(
        run_id="r1", app_name="gui_v6", app_version="6.0.0-g1",
        license_ref="LIC-1", machine_id="m1", documents=documents,
    )
    assert payload["document_count"] == 3
    assert payload["succeeded_count"] == 2
    assert payload["failed_count"] == 1
    assert payload["total_pages"] == 8
    assert payload["license_ref"] == "LIC-1"
    # RGPD : aucun nom/chemin ne doit survivre, à aucun niveau
    blob = json.dumps(payload, ensure_ascii=False).lower()
    assert "filename" not in blob
    assert "secret" not in blob
    assert "lettre" not in blob
    for doc in payload["documents"]:
        assert set(doc).issubset({"ordinal", "page_count", "status", "duration_ms", "extension"})


def test_new_run_id_unique():
    assert new_run_id() != new_run_id()


# --- UsageTelemetryClient ---------------------------------------------------

class _FakeResp:
    def __init__(self, status_code):
        self.status_code = status_code


class _FakeSession:
    def __init__(self, status_code=200, raise_exc=None):
        self.status_code = status_code
        self.raise_exc = raise_exc
        self.calls = []

    def post(self, url, json=None, timeout=None):
        self.calls.append({"url": url, "json": json, "timeout": timeout})
        if self.raise_exc is not None:
            raise self.raise_exc
        return _FakeResp(self.status_code)


def test_report_ok_on_2xx():
    sess = _FakeSession(status_code=200)
    client = UsageTelemetryClient("http://localhost:8000", session=sess)
    assert client.report({"run_id": "r1"}) is True
    assert sess.calls[0]["url"].endswith("/api/v1/usage/report")
    assert sess.calls[0]["json"] == {"run_id": "r1"}


def test_report_false_on_network_error_without_raising():
    sess = _FakeSession(raise_exc=ConnectionError("réseau coupé"))
    client = UsageTelemetryClient("http://localhost:8000", session=sess)
    assert client.report({"run_id": "r1"}) is False  # ne lève pas


def test_report_false_on_non_2xx():
    sess = _FakeSession(status_code=403)
    client = UsageTelemetryClient("http://localhost:8000", session=sess)
    assert client.report({"run_id": "r1"}) is False


# --- spool JSONL (rejeu des échecs) -----------------------------------------

def test_spool_and_flush(tmp_path):
    spool = tmp_path / "usage_spool.jsonl"
    spool_payload(spool, {"run_id": "a"})
    spool_payload(spool, {"run_id": "b"})
    assert spool.read_text(encoding="utf-8").count("\n") == 2

    # tout part : le spool est vidé
    sent = []
    ok_client = UsageTelemetryClient("http://x", session=_FakeSession(200))
    flush_spool(spool, ok_client)
    assert not spool.exists() or spool.read_text(encoding="utf-8").strip() == ""


def test_flush_keeps_failures(tmp_path):
    spool = tmp_path / "usage_spool.jsonl"
    spool_payload(spool, {"run_id": "a"})
    down_client = UsageTelemetryClient("http://x", session=_FakeSession(raise_exc=OSError("down")))
    flush_spool(spool, down_client)
    # l'échec reste en file pour un prochain essai
    assert spool.exists()
    assert "a" in spool.read_text(encoding="utf-8")