"""符文引擎单元测试。"""

from __future__ import annotations

from app.modules.macros import MacroContext, render


def test_replaces_char_and_user() -> None:
    ctx = MacroContext(char_name="狂三", user_name="士道")
    assert render("{{char}}对{{user}}说", ctx) == "狂三对士道说"


def test_bot_is_char_alias() -> None:
    assert render("{{bot}}", MacroContext(char_name="狂三")) == "狂三"


def test_original_macro() -> None:
    assert render("[{{original}}]", MacroContext(original="原辞")) == "[原辞]"


def test_case_insensitive() -> None:
    assert render("{{Char}}", MacroContext(char_name="狂三")) == "狂三"


def test_unknown_macro_preserved() -> None:
    assert render("{{unknown}}", MacroContext()) == "{{unknown}}"


def test_empty_braces_preserved() -> None:
    assert render("a{{}}b", MacroContext()) == "a{{}}b"


def test_resolver_exception_preserved() -> None:
    # {{roll:}} 无有效规格参数 → 解析器走默认 1d6，不应抛错；这里测无参 random 不抛
    assert render("{{random}}", MacroContext()) == ""


def test_random_picks_from_args() -> None:
    ctx = MacroContext()
    for _ in range(20):
        assert render("{{random:甲,乙,丙}}", ctx) in {"甲", "乙", "丙"}


def test_roll_in_range() -> None:
    for _ in range(20):
        result = render("{{roll:2d6}}", MacroContext())
        assert 2 <= int(result) <= 12


def test_roll_default_and_invalid() -> None:
    # 默认 1d6
    assert 1 <= int(render("{{roll}}", MacroContext())) <= 6
    # 非法规格原样返回
    assert render("{{roll:xyz}}", MacroContext()) == "xyz"


def test_getvar() -> None:
    ctx = MacroContext(variables={"mood": "怅然"})
    assert render("{{getvar:mood}}", ctx) == "怅然"
    assert render("{{getvar:missing}}", ctx) == ""


def test_recursive_expansion() -> None:
    # char 值内含 {{user}}，递归展开
    ctx = MacroContext(char_name="{{user}}的影子", user_name="士道")
    assert render("{{char}}", ctx) == "士道的影子"


def test_time_macro_without_snapshot_is_empty() -> None:
    ctx = MacroContext()
    assert render("{{date}}", ctx) == ""
    assert render("{{shichen}}", ctx) == ""


def test_no_braces_unchanged() -> None:
    assert render("普通文本无占位符", MacroContext()) == "普通文本无占位符"