"""Campuri variabile proprii (custom.*): CRUD, validare si randare pe eticheta."""
from __future__ import annotations

import json

import pytest

from cantarire import designer


def _create_field(client, label="Contact firmă", template="Tel. {{company.phone}}",
                  active="on"):
    return client.post("/campuri/nou", data={
        "label": label, "template": template, "active": active,
    }, follow_redirects=True)


def test_fields_page_and_nav(client):
    page = client.get("/campuri")
    assert page.status_code == 200
    html = page.get_data(as_text=True)
    assert "Câmpuri variabile" in html
    assert 'href="/campuri/nou"' in html
    # link in subnavigatia din Setari, nu in bara principala
    flat = " ".join(html.split())
    assert 'href="/campuri"' in flat
    assert ">Câmpuri</a>" in flat


def test_create_field_generates_key_and_shows_preview(client):
    _create_field(client)
    html = client.get("/campuri").get_data(as_text=True)
    assert "Contact firmă" in html
    assert "custom.contact_firma" in html
    assert "Tel. 0700 000 000" in html          # rezultatul demo

    with client.application.app_context():
        from cantarire.repositories import get_label_field_by_key

        row = get_label_field_by_key("custom.contact_firma")
    assert row is not None and row["active"] == 1


def test_duplicate_labels_get_unique_keys(client):
    _create_field(client, label="Alergeni", template="Poate conține gluten")
    _create_field(client, label="Alergeni", template="Poate conține lactoză")
    with client.application.app_context():
        from cantarire.repositories import list_label_fields

        keys = [row["key"] for row in list_label_fields()]
    assert keys == ["custom.alergeni", "custom.alergeni_2"]


def test_unknown_placeholder_is_rejected(client):
    response = _create_field(client, label="Greșit", template="X {{does.not.exist}}")
    html = response.get_data(as_text=True)
    assert "Campuri necunoscute" in html
    with client.application.app_context():
        from cantarire.repositories import list_label_fields

        assert list_label_fields() == []


def test_empty_template_is_rejected(client):
    response = _create_field(client, label="Gol", template="   ")
    assert "Textul campului este obligatoriu." in response.get_data(as_text=True)


def test_update_keeps_key_and_can_deactivate(client):
    _create_field(client)
    with client.application.app_context():
        from cantarire.repositories import get_label_field_by_key

        field_id = get_label_field_by_key("custom.contact_firma")["id"]

    client.post(f"/campuri/{field_id}/editare", data={
        "label": "Contact (nou)", "template": "{{company.phone}}",
    }, follow_redirects=True)

    with client.application.app_context():
        from cantarire.repositories import get_label_field, list_label_fields

        row = get_label_field(field_id)
        assert row["label"] == "Contact (nou)"
        assert row["key"] == "custom.contact_firma"     # cheia ramane stabila
        assert row["active"] == 0                        # fara bifa = inactiv
        assert [f["key"] for f in list_label_fields()] == []   # ascuns din designer


def test_delete_field(client):
    _create_field(client, label="Șters", template="text")
    with client.application.app_context():
        from cantarire.repositories import get_label_field_by_key

        field_id = get_label_field_by_key("custom.sters")["id"]
    response = client.post(f"/campuri/{field_id}/stergere", follow_redirects=True)
    assert "a fost sters" in response.get_data(as_text=True)
    with client.application.app_context():
        from cantarire.repositories import get_label_field_by_key

        assert get_label_field_by_key("custom.sters") is None


def test_preview_endpoint(client):
    ok = client.get("/campuri/previzualizare",
                    query_string={"template": "{{recipe.name}} · {{package.lot}}"})
    assert ok.get_json() == {"ok": True, "value": "Fasole cu carne · LOT-2610-A"}

    bad = client.get("/campuri/previzualizare", query_string={"template": "{{nope.x}}"})
    data = bad.get_json()
    assert data["ok"] is False and "Campuri necunoscute" in data["error"]


def test_custom_field_is_offered_in_designer_picker(client):
    _create_field(client, label="Contact firmă", template="Tel. {{company.phone}}")
    response = client.post("/sabloane/designer/nou", data={"name": "Cu camp propriu"},
                           follow_redirects=True)
    assert response.status_code == 200
    html = response.get_data(as_text=True)
    assert "custom.contact_firma" in html
    assert "Tel. 0700 000 000" in html        # sample pentru previzualizare
    # denumirea trece prin tojson, deci diacriticele sunt escapate
    assert "Contact firm\\u0103" in html


def test_custom_field_renders_on_label(client):
    _create_field(client, label="Contact", template="Tel. {{company.phone}}")
    design = designer.validate_design({
        "width_mm": 100, "height_mm": 60,
        "blocks": [
            {"type": "field", "x": 3, "y": 3, "w": 70, "h": 6, "field": "custom.contact"},
        ],
    }, 100, 60)
    assert design["blocks"][0]["field"] == "custom.contact"

    with client.application.app_context():
        from cantarire.repositories import list_label_fields

        fields = designer.apply_custom_fields(designer.demo_fields(), list_label_fields())
    html = designer.render_design(design, fields, [])
    assert "Tel. 0700 000 000" in html


def test_deleted_custom_field_renders_empty_not_wrong(client):
    """Un design care refera un camp sters nu trebuie sa cada sau sa afiseze altceva."""
    design = designer.validate_design({
        "width_mm": 100, "height_mm": 60,
        "blocks": [{"type": "field", "x": 3, "y": 3, "w": 70, "h": 6, "field": "custom.sters"}],
    }, 100, 60)
    assert design["blocks"][0]["field"] == "custom.sters"
    html = designer.render_design(design, designer.demo_fields(), [])
    assert "Fasole cu carne" not in html      # nu cade pe alt camp
    assert ">  <" in html or html.count("d-field") == 1


def test_custom_field_template_rejects_custom_reference():
    """Campurile proprii se pot referi doar la campuri fixe (fara bucle)."""
    errors = designer.custom_template_errors("X {{custom.altceva}}")
    assert errors and "Campuri necunoscute" in errors[0]
    assert designer.custom_template_errors("{{company.phone}}") == []


@pytest.mark.parametrize("text,expected", [
    ("", ""),
    ("text simplu", "text simplu"),
    ("{{company.name}}", "Moto Adv SRL"),
    ("{{ package.lot }}/{{package.operator}}", "LOT-2610-A/Maria"),
])
def test_expand_custom(text, expected):
    assert designer.expand_custom(text, designer.demo_fields()) == expected


def test_usage_counter_reports_templates(client):
    _create_field(client, label="Folosit", template="X")
    client.post("/sabloane/designer/nou", data={"name": "Cu folosit"})
    with client.application.app_context():
        from cantarire.repositories import (count_label_field_usage, get_default_template,
                                            get_label_field_by_key, list_templates,
                                            save_template_design)

        field = get_label_field_by_key("custom.folosit")
        target = [t for t in list_templates() if t["name"] == "Cu folosit"][0]
        payload = {"version": 1, "width_mm": 100, "height_mm": 60, "blocks": [
            {"id": "b1", "type": "field", "x": 1, "y": 1, "w": 50, "h": 6,
             "field": "custom.folosit"},
        ]}
        save_template_design(target["id"], json.dumps(payload))
        assert count_label_field_usage(field["key"]) == 1
        assert count_label_field_usage("custom.inexistent") == 0
        assert get_default_template() is not None