import type {Json} from '../../../../types/bot/workflow/workflow.ts';
import type {WorkflowQueryTemplate} from '../../../../types/bot/workflow/metadata.ts';
import {assert_json} from '../../runtime/value.ts';
import {describe, output} from '../../metadata.ts';

export const config_template: WorkflowQueryTemplate = {
    name: 'info', version: '1.0.0', provider: 'info',
    i18n: describe('信息查询', '从 InfoManager 读取指定名称的信息快照，仅返回快照的 value。'),
    config: [{name: 'name', type: 'string', required: true, provider: 'info', min_length: 1,
        i18n: describe('信息名称', '选择或填写 InfoManager 中的信息名称；名称必须是非空字符串。')}],
    output: output('json', '信息值', 'InfoManager.get_info(name).value 的实际 JSON 值，类型和结构取决于所选信息；不包含快照名称或翻译元数据。'),
};

export function query_info(context: {
    info_manager: {get_info(name: string): {value: unknown} | undefined} | null;
}, args: Record<string, Json>): Json {
    if (typeof args.name !== 'string' || args.name.length === 0) {
        throw Object.assign(new Error('Info query requires a name'), {code: 'INVALID_QUERY_ARGUMENTS'});
    }
    if (!context.info_manager) {
        throw Object.assign(new Error('Info manager is unavailable'), {code: 'INFO_UNAVAILABLE'});
    }
    const snapshot = context.info_manager.get_info(args.name);
    if (!snapshot) {
        throw Object.assign(new Error(`Info was not found: ${args.name}`), {code: 'INFO_NOT_FOUND'});
    }
    assert_json(snapshot.value);
    return snapshot.value;
}