#include "provisioning.h"
#include "email_address_page.h"
#include "home.h"
#include "license_key_page.h"
#include "logger/logger.h"
#include "wifi_setup_page.h"

namespace radiantwave::provisioning {

// Push the page for a walkthrough step, or Home when the walkthrough is done.
static void pushStep(AppState &state, Step step) {
	switch (step) {
	// case Step::Internet:
	//     state.pages.push(state, std::make_unique<WiFiSetupPage>());
	//     break;
	case Step::Email:
		state.pages.push(state, std::make_unique<EmailAddressPage>());
		break;
	case Step::License:
		state.pages.push(state, std::make_unique<LicenseKeyPage>());
		break;
	case Step::Done:
		state.provisioningMode = false;
		state.pages.push(state, std::make_unique<Home>());
		break;
	}
}

void begin(AppState &state) {
	// Without the database there is nowhere to persist email/license, so the
	// walkthrough would trap the user on pages that can never be completed.
	if (!state.db.isOpen()) {
		state.provisioningMode = false;
		state.pages.push(state, std::make_unique<Home>());
		return;
	}

	const bool internetUp = state.network.hasInternet();
	const bool hasEmail =
		!state.db.getKV(radiantwave::db::KV_EMAIL_ADDRESS).empty();
	const bool hasLicense =
		!state.db.getKV(radiantwave::db::KV_LICENSE_KEY).empty();

	if (indicatesFirstRun(internetUp, hasEmail, hasLicense)) {
		// Placeholder: a brand-new device. Later this flag will launch the
		// first-run welcome walkthrough (TOS, quick user guide, ...).
		state.firstRunWalkthrough = true;
		radiantwave::logger::Logger::instance().info(
			"Provisioning",
			"First-Run detected (no internet, no email, no license); "
			"first-run welcome walkthrough is not yet implemented");
	}

	state.walkthroughInternetUp = internetUp;
	state.provisioningMode = true;
	pushStep(state, firstMissingStep(internetUp, hasEmail, hasLicense));
}

void advance(AppState &state) {
	if (state.pages.depth() > 0) {
		state.pages.pop(state);
	}

	// Internet is the first prerequisite and never gets "un-reached" once
	// satisfied, so it is only re-probed when it was still missing (i.e. the
	// walkthrough is coming from the WiFi page).
	bool internetUp = state.walkthroughInternetUp;
	if (!internetUp) {
		internetUp = state.network.hasInternet();
		state.walkthroughInternetUp = internetUp;
	}

	const bool hasEmail =
		!state.db.getKV(radiantwave::db::KV_EMAIL_ADDRESS).empty();
	const bool hasLicense =
		!state.db.getKV(radiantwave::db::KV_LICENSE_KEY).empty();

	state.provisioningMode = true;
	pushStep(state, firstMissingStep(internetUp, hasEmail, hasLicense));
}

} // namespace radiantwave::provisioning