use std::{error::Error, fmt};

#[derive(Clone, Debug, PartialEq, Eq)]
pub enum VisualNovelDomainError {
    MissingProfileId,
    MissingRunId,
    MissingOwnerUserId,
    MissingClientEventId,
    MissingActionText,
    InvalidChoiceId,
    FreeTextDisabled,
    HistoryRegenerationDisabled,
    HistoryEntryNotFound,
    InvalidHistorySource,
    InvalidRuntimeStep,
    InvalidJson,
    EmptyRuntimeSteps,
}

impl fmt::Display for VisualNovelDomainError {
    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
        let message = match self {
            Self::MissingProfileId => "visual novel profile_id 缺失",
            Self::MissingRunId => "visual novel run_id 缺失",
            Self::MissingOwnerUserId => "visual novel owner_user_id 缺失",
            Self::MissingClientEventId => "visual novel client_event_id 缺失",
            Self::MissingActionText => "visual novel 行动文本缺失",
            Self::InvalidChoiceId => "visual novel choice_id 不合法",
            Self::FreeTextDisabled => "visual novel 当前作品未开启自由行动",
            Self::HistoryRegenerationDisabled => "visual novel 当前作品未开启历史重生成",
            Self::HistoryEntryNotFound => "visual novel history entry 不存在",
            Self::InvalidHistorySource => "visual novel 只能从助手历史节点重生成",
            Self::InvalidRuntimeStep => "visual novel runtime step 不合法",
            Self::InvalidJson => "visual novel JSON 解析失败",
            Self::EmptyRuntimeSteps => "visual novel runtime step 不能为空",
        };
        write!(f, "{message}")
    }
}

impl Error for VisualNovelDomainError {}