import { createTrainingSession, type PatientConfigPayload, type TrainingMode } from './session'

export type ScenarioRecommendation = {
	id: string
	title: string
	desc: string
	tags: string[]
	defaults: ScenarioForm
}

export type ScenarioOption = {
	value: string
	label: string
}

export type ScenarioForm = {
	environment: string
	ageGroup: string
	education: string
	personality: string
}

export type ScenarioOptions = {
	environments: ScenarioOption[]
	ageGroups: ScenarioOption[]
	educations: ScenarioOption[]
	personalities: ScenarioOption[]
}

export type ScenarioConfigPayload = ScenarioForm & {
	caseId: string
	caseNo: string
	mode: TrainingMode
	recommendationId?: string
}

export function fetchScenarioOptions() {
	return Promise.resolve({
		recommendations: [
			{
				id: 'typical-outpatient',
				title: '典型门诊病例',
				desc: '门诊常规病例：针对初学者设计的标准化沟通流程。',
				tags: ['中年', '配合'],
				defaults: {
					environment: 'outpatient',
					ageGroup: 'middle_aged',
					education: 'higher',
					personality: 'calm'
				}
			},
			{
				id: 'emergency-crisis',
				title: '急诊重症危机',
				desc: '急诊危重：急性心梗紧急入院。',
				tags: ['老年', '急躁'],
				defaults: {
					environment: 'emergency',
					ageGroup: 'elderly',
					education: 'secondary',
					personality: 'impatient'
				}
			}
		] as ScenarioRecommendation[],
		options: {
			environments: [
				{ value: 'outpatient', label: '门诊' },
				{ value: 'emergency', label: '急诊' },
				{ value: 'ward', label: '病房' }
			],
			ageGroups: [
				{ value: 'child', label: '儿童' },
				{ value: 'youth', label: '青年' },
				{ value: 'middle_aged', label: '中年' },
				{ value: 'elderly', label: '老年' }
			],
			educations: [
				{ value: 'primary_or_below', label: '小学及以下' },
				{ value: 'secondary', label: '中等教育' },
				{ value: 'higher', label: '高等教育' }
			],
			personalities: [
				{ value: 'calm', label: '平和' },
				{ value: 'anxious', label: '焦虑' },
				{ value: 'impatient', label: '急躁' },
				{ value: 'cooperative', label: '配合' },
				{ value: 'suspicious', label: '多疑' }
			]
		} as ScenarioOptions
	})
}

export function createScenarioConfig(payload: ScenarioConfigPayload) {
	return createTrainingSession({
		case_id: 1,
		training_type: 'diagnosis_treatment',
		mode: payload.mode,
		score_type: 'percentage',
		patient_config: {
			visit_environment: payload.environment as PatientConfigPayload['visit_environment'],
			age_group: payload.ageGroup as PatientConfigPayload['age_group'],
			education_level: payload.education as PatientConfigPayload['education_level'],
			personality: payload.personality as PatientConfigPayload['personality']
		}
	}).then(session => ({
		id: session.session_code,
		...payload,
		session,
		createdAt: new Date().toISOString()
	}))
}

function resolveCaseId(payload: ScenarioConfigPayload) {
	const explicitId = Number(payload.caseId)
	if (Number.isInteger(explicitId) && explicitId > 0) return explicitId

	const caseNo = Number(payload.caseNo)
	if (Number.isInteger(caseNo) && caseNo > 0) return caseNo

	const matched = payload.caseId.match(/\d+/)
	const fallbackId = matched ? Number(matched[0]) : 0
	if (Number.isInteger(fallbackId) && fallbackId > 0) return fallbackId

	throw new Error('病例 ID 无效，无法新建会话')
}