package com.estateunified.panel

import com.google.gson.Gson
import com.google.gson.reflect.TypeToken
import java.nio.charset.StandardCharsets

internal data class NewsDto(
    val id: String,
    val title: String,
    val tags: List<String> = emptyList(),
    val publishedAt: String = "",
    val source: String = "",
    val preview: String = "",
    val body: String = "",
)

internal class NewsStore(
    private val gson: Gson,
) {
    private val items: List<NewsDto> = load()

    fun all(): List<NewsDto> = items

    fun get(id: String): NewsDto? = items.firstOrNull { it.id == id }

    private fun load(): List<NewsDto> {
        val stream =
            this.javaClass.classLoader.getResourceAsStream("mock-news.json") ?: return emptyList()
        val text = stream.use { it.readBytes().toString(StandardCharsets.UTF_8) }
        return runCatching { gson.fromJson<List<NewsDto>>(text, listType) ?: emptyList() }
            .getOrElse { emptyList() }
    }

    companion object {
        private val listType = object : TypeToken<List<NewsDto>>() {}.type
    }
}