package be.simplenotes.app.utils

import be.simplenotes.domain.usecases.search.SearchTerms

private fun innerRegex(name: String) =
    """$name:['"](.*?)['"]""".toRegex()
private fun outerRegex(name: String) =
    """($name:['"].*?['"])""".toRegex()

private val titleRe = innerRegex("title")
private val outerTitleRe = outerRegex("title")

private val tagRe = innerRegex("tag")
private val outerTagRe = outerRegex("tag")

private val contentRe = innerRegex("content")
private val outerContentRe = outerRegex("content")

fun parseSearchTerms(input: String): SearchTerms {
    var c: String = input

    fun extract(innerRegex: Regex, outerRegex: Regex): String? {
        val match = innerRegex.find(input)?.groups?.get(1)?.value
        if (match != null) {
            val group = outerRegex.find(input)?.groups?.get(1)?.value
            group?.let { c = c.replace(it, "") }
        }
        return match
    }

    val title: String? = extract(titleRe, outerTitleRe)
    val tag: String? = extract(tagRe, outerTagRe)
    val content: String? = extract(contentRe, outerContentRe)

    val all = c.trim().ifEmpty { null }

    return SearchTerms(
        title = title,
        tag = tag,
        content = content,
        all = all
    )
}