import { getSelfInputMediaSourceOptions } from '@/api/self_input_stats'

/**
 * 自录转化统计：自媒体来源选项（来自字典「推广渠道」channels）。
 * 业绩页与账户消耗页共用同一接口，下拉打开时刷新，保证两侧字典变更同步。
 */
export interface MediaSourceOption {
    name: string
    value: string
}

export function useMediaSourceOptions() {
    const mediaSourceOptions = ref<MediaSourceOption[]>([])
    const mediaSourceLoading = ref(false)

    const normalize = (raw: any): MediaSourceOption[] => {
        if (!Array.isArray(raw)) return []
        const list: MediaSourceOption[] = []
        const seen = new Set<string>()
        for (const item of raw) {
            if (typeof item === 'string') {
                const name = item.trim()
                if (name && !seen.has(name)) {
                    seen.add(name)
                    list.push({ name, value: '' })
                }
                continue
            }
            if (item && typeof item === 'object') {
                const name = String(item.name ?? '').trim()
                if (name && !seen.has(name)) {
                    seen.add(name)
                    list.push({ name, value: String(item.value ?? '') })
                }
            }
        }
        return list
    }

    const loadMediaSourceOptions = async (force = false) => {
        if (!force && mediaSourceOptions.value.length > 0) {
            return
        }
        mediaSourceLoading.value = true
        try {
            const res = await getSelfInputMediaSourceOptions()
            mediaSourceOptions.value = normalize(res)
        } catch {
            mediaSourceOptions.value = []
        } finally {
            mediaSourceLoading.value = false
        }
    }

    const refreshMediaSourceOptions = () => loadMediaSourceOptions(true)

    return {
        mediaSourceOptions,
        mediaSourceLoading,
        loadMediaSourceOptions,
        refreshMediaSourceOptions,
    }
}