package com.peachpasswords.autofill

import kotlinx.coroutines.flow.MutableStateFlow
import kotlinx.coroutines.flow.StateFlow
import kotlinx.coroutines.flow.asStateFlow
import javax.inject.Inject
import javax.inject.Singleton

/**
 * Carries a one-shot "open the new-entry editor" request from the autofill picker
 * to the nav host. Mirrors [com.peachpasswords.updates.UpdateRepository]'s shape
 * so the host reads a [StateFlow] and calls a `consume` after navigating.
 *
 * Held at app scope so MainActivity's [android.app.Activity.onNewIntent] can set
 * the request before the NavHost subscribes (cold launches hit the same flow via
 * the picker→MainActivity launch path).
 */
@Singleton
class AutofillNavRepository @Inject constructor() {

    private val _newEntryRequest = MutableStateFlow<NewEntryRequest?>(null)
    val newEntryRequest: StateFlow<NewEntryRequest?> = _newEntryRequest.asStateFlow()

    fun requestNewEntry(url: String?, username: String?, email: String?) {
        _newEntryRequest.value = NewEntryRequest(
            url = url?.takeIf { it.isNotBlank() },
            username = username?.takeIf { it.isNotBlank() },
            email = email?.takeIf { it.isNotBlank() },
        )
    }

    fun consumeNewEntryRequest() { _newEntryRequest.value = null }
}

/**
 * Prefill payload for the new-entry editor. Every field is optional — the
 * minimum contract is [url], mirroring the inline picker's create form.
 */
data class NewEntryRequest(
    val url: String? = null,
    val username: String? = null,
    val email: String? = null,
)