import dayjs from 'dayjs'

export type FriendlyParse = { main: string; sub?: string; tag?: string }

/** 业务时间：支持秒级时间戳或毫秒（字符串数字） */
export function formatBizTime(t: unknown): string | undefined {
    if (t == null || t === '') return undefined
    const n =
        typeof t === 'string' && /^\d+$/.test(t.trim())
            ? parseInt(t.trim(), 10)
            : Number(t)
    if (!Number.isFinite(n) || n <= 0) return undefined
    return n > 1e12
        ? dayjs(n).format('YYYY-MM-DD HH:mm:ss')
        : dayjs.unix(n).format('YYYY-MM-DD HH:mm:ss')
}

export function parseRtcInner(inner: Record<string, unknown>): FriendlyParse {
    const callType = inner.call_type ?? inner.callType ?? 2
    const callTypeLabel =
        callType === 2 ? '视频' : callType === 1 ? '语音通话' : '通话'

    let cmd = String(inner.cmd || inner.action || '').toLowerCase()
    if (!cmd) {
        const at = Number(inner.actionType ?? inner.action_type ?? inner.call_action)
        if (at === 1) cmd = 'invite'
        else if (at === 2) cmd = 'cancel'
        else if (at === 3) cmd = 'accept'
        else if (at === 4) cmd = 'reject'
        else if (at === 5) cmd = 'timeout'
        else if (at === 6) cmd = 'hangup'
        else if (at === 7) cmd = 'linebusy'
    }

    const cmdMap: Record<string, string> = {
        hangup: '已结束',
        invite: '发起通话',
        linebusy: '对方忙线',
        cancel: '已取消呼叫',
        reject: '已拒绝接听',
        accept: '已接听',
        timeout: '无人接听'
    }
    const action = cmdMap[cmd] || (cmd ? `状态：${cmd}` : '')

    // 如果有通话时长，追加显示
    const duration = Number(inner.duration ?? inner.call_duration)
    const durationText = (duration > 0 && (action === '已结束' || action === '已挂断')) ? ` (${Math.floor(duration / 60)}分${duration % 60}秒)` : ''

    const main = action ? `${callTypeLabel} · ${action}${durationText}` : callTypeLabel
    const parts: string[] = []
    //if (inner.inviter) parts.push(`发起方: ${inner.inviter}`)
    if (inner.invitee) parts.push(`对方: ${inner.invitee}`)
    if (inner.groupID) parts.push(`群组: ${inner.groupID}`)

    // 强制输出兜底调试信息（仅未识别到 action 时触发）
    if (!action) {
        const dbg = JSON.stringify(inner).replace(/"/g, '')
        parts.push(`(原始参数: ${dbg})`)
    }

    return {
        main,
        sub: parts.length ? parts.join('，') : undefined,
        tag: '通话'
    }
}

/**
 * 将 IM 自定义 / 信令 JSON 解析为可读文案（医生进诊室、音视频通话等）。
 * 与后台 IM 漫游、小程序 TUIKit 约定字段一致。
 */
export function parseImBusinessPayload(raw: string): FriendlyParse | null {
    const s = raw.trim()
    if (!s.startsWith('{')) return null
    let o: Record<string, unknown>
    try {
        o = JSON.parse(s) as Record<string, unknown>
    } catch {
        return null
    }

    if (!('businessID' in o) && !('cmd' in o)) {
        return null
    }

    if (o.businessID === 'doctor_entered_consult_room') {
        const t = formatBizTime(o.time)
        return { main: '医生已进入诊室', sub: t, tag: '诊室' }
    }

    if (o.businessID === 'patient_opened_chat') {
        const parts: string[] = []
        if (o.patientName) parts.push(`患者：${String(o.patientName)}`)
        if (o.patientId != null && o.patientId !== '') parts.push(`患者 ID：${String(o.patientId)}`)
        if (o.doctorId != null && o.doctorId !== '') parts.push(`关联医生：${String(o.doctorId)}`)
        const t = formatBizTime(o.time)
        if (t) parts.push(t)
        return { main: '患者进入聊天', sub: parts.length ? parts.join(' · ') : undefined, tag: '诊室' }
    }

    if (o.businessID === 'patient_closed_chat') {
        const parts: string[] = []
        if (o.patientName) parts.push(`患者：${String(o.patientName)}`)
        if (o.patientId != null && o.patientId !== '') parts.push(`患者 ID：${String(o.patientId)}`)
        const t = formatBizTime(o.time)
        if (t) parts.push(t)
        return { main: '患者离开聊天页', sub: parts.length ? parts.join(' · ') : undefined, tag: '诊室' }
    }

    if (o.businessID === 'user_typing_status') {
        return { main: '对方正在输入…', tag: '状态' }
    }

    if (o.businessID === 'consultation_complete') {
        return { main: '问诊已完成', sub: formatBizTime(o.time), tag: '诊室' }
    }

    if (o.businessID === 1 || o.businessID === '1' || o.businessID === 'av_call') {
        let inner: unknown = o.data
        if (typeof inner === 'string') {
            try {
                inner = JSON.parse(inner)
            } catch {
                // fallback
            }
        }
        // 深远兼容：合并外层字段和 data 层字段，避免各端版本取参有遗漏
        const merged = { ...o, ...(typeof inner === 'object' && inner ? inner : {}) }
        return parseRtcInner(merged as Record<string, unknown>)
    }

    if (o.businessID === 'rtc_call' || o.cmd) {
        return parseRtcInner(o as Record<string, unknown>)
    }

    return null
}