import { reactive } from 'vue'
import { validOptionalSize } from './model'
import type { KeyframeReadiness } from './types'
import type { QualityInput, QualityReceipt, QualityTarget, VisualValidation, VideoValidation } from './quality.types'

/** 未返回的操作不显示上次成功结论；网络失败不会自动重发。 */
const sessions = reactive<
    Record<string, { receipt: QualityReceipt | null; error: string; videoValidation?: VideoValidation }>
>({})

/** 正式 ID 与目标类型共同隔离会话结果，批量回执按剧集隔离。 */
export function qualityKey(projectId: string, target: QualityTarget | null) {
    return JSON.stringify([
        projectId,
        target?.kind,
        target && ('assetId' in target ? [target.shotId, target.assetId] : target.episodeNo)
    ])
}

/** 同一目标关闭后重新打开仍能查看本会话的回执。 */
export function qualitySession(key: string) {
    return (sessions[key] ??= { receipt: null, error: '' })
}

/** 一行一个允许文字，仅清理空白与重复，不自行添加授权内容。 */
export function allowedTextLines(value: string) {
    return [
        ...new Set(
            value
                .split('\n')
                .map(item => item.trim())
                .filter(Boolean)
        )
    ]
}

/** 付费前独立校验整数、尺寸与剧集范围，0 次修复代表只验不修。 */
export function validQualityInput(input: QualityInput) {
    return (
        [input.concurrency, input.limit, input.episodeNo].every(value => Number.isSafeInteger(value) && value > 0) &&
        Number.isSafeInteger(input.maxRepairAttempts) &&
        input.maxRepairAttempts >= 0 &&
        validOptionalSize(input.width ?? '', input.height ?? '')
    )
}

/** 与后端保持同一优先级：全项目有过期项时先筛过期，再按当前集筛选。 */
export function qualityTargets(readiness: KeyframeReadiness, input: QualityInput) {
    return readiness.items
        .filter(
            item =>
                item.status === 'ready' &&
                (input.force ||
                    (readiness.stalePrimaryKeyframe > 0
                        ? item.primaryKeyframeStale === true
                        : !item.primaryKeyframeId)) &&
                item.episodeNo === input.episodeNo
        )
        .slice(0, input.limit)
}

/** 最小响应校验，避免畸形响应或仅 HTTP 200 被显示成视觉通过。 */
export function isVisualValidation(value: unknown): value is VisualValidation {
    if (!value || typeof value !== 'object') return false
    const item = value as VisualValidation
    return (
        typeof item.passed === 'boolean' &&
        typeof item.summary === 'string' &&
        typeof item.subjectCountConsistent === 'boolean' &&
        Array.isArray(item.subjects) &&
        item.subjects.every(
            subject =>
                typeof subject.subjectRef === 'string' &&
                typeof subject.identityConsistent === 'boolean' &&
                typeof subject.formConsistent === 'boolean' &&
                Array.isArray(subject.issues) &&
                subject.issues.every(issue => typeof issue === 'string')
        ) &&
        Array.isArray(item.issues) &&
        item.issues.every(
            issue => typeof issue.description === 'string' && ['warning', 'error'].includes(issue.severity)
        ) &&
        typeof item.unauthorizedText?.detected === 'boolean' &&
        Array.isArray(item.unauthorizedText.texts)
    )
}

/** 公开视频 DTO 不含质量历史，只使用本会话真实收到的校验回执。 */
export function sessionVideoValidation(projectId: string, shotId: string, assetId: string): VideoValidation | null {
    return qualitySession(qualityKey(projectId, { kind: 'video', shotId, assetId, title: '' })).videoValidation ?? null
}