import {getById, writeError, writeDebug, h, span, addClass, div} from '/common.module.js'
import {DACTAL} from "/dactal.js"

const enterEvent = new KeyboardEvent('keydown', {
    key: 'Enter',
    code: 'Enter',
    keyCode: 13,
    which: 13,
    bubbles: true,
    cancelable: true
});

let dactal

export async function onLoad() {
    const input = getById("input")
    dactal = new DACTAL()

    fetch("/brp.json").then(async res => {
        const cdata = await res.json()
        dactal.load(cdata, "personen")
        writeDebug("Loaded brp data")
        await runQuery(input.value)
    })
    
    input.onkeydown = async (e) => {
        if (e.key === "Enter" && !e.shiftKey) {
            e.preventDefault()
            await runQuery(input.value)
        }
    }

    input.dispatchEvent(enterEvent)
}

async function runQuery(query) {
    const results = getById("results")

    try {
        let result = await dactal.query(query)

        results.replaceChildren(renderValue(result.slice(0, 100)))

        if (result.length > 100) {
            results.appendChild(div(span(`Not showing ${result.length - 100} more results.`)))
        }
    } catch (e) {
        writeError(e.message)
        results.replaceChildren()
    }
}

function renderValue(obj) {
    if (Array.isArray(obj)) {
        return h("ol",
            ...obj.map((item) => h("li", renderValue(item)))
        )
    } else if (typeof obj === "object") {
        return h("ul",
            ...Object.entries(obj).map(([name, item]) =>
                addClass(h("li",
                        addClass(span(name), "name"),
                        span(" "),
                        renderValue(item)),
                    "dash")))
    } else if (typeof obj === "boolean") {
        return addClass(span(obj), obj ? "json-true" : "json-false")
    } else if (typeof obj === "number") {
        return addClass(span(obj), "json-number")
    } else if (typeof obj === "string") {
        return span(obj)
    }
}