// This file is part of the happyDomain (R) project.
// Copyright (c) 2020-2026 happyDomain
// Authors: Pierre-Olivier Mercier, et al.

package checker

import sdk "git.happydns.org/checker-sdk-go/checker"

// EvalAggregateByScheme runs fn on the subset of probes matching scheme.
// If no probe was attempted, returns a single Unknown state with
// code+".no_probes". Otherwise it returns the per-probe states emitted by
// fn, falling back to a single OK state (code+".ok" with okMsg) when fn
// emitted nothing — the conventional "everything is fine" shape used by
// reachability and redirect rules.
func EvalAggregateByScheme(data *HTTPData, scheme, code, okMsg string, fn func(p HTTPProbe, emit func(sdk.CheckState))) []sdk.CheckState {
	probes := probesByScheme(data.Probes, scheme)
	if len(probes) == 0 {
		return []sdk.CheckState{unknownState(code+".no_probes", "No probes were attempted.")}
	}
	var states []sdk.CheckState
	emit := func(s sdk.CheckState) { states = append(states, s) }
	for _, p := range probes {
		fn(p, emit)
	}
	if len(states) == 0 {
		return []sdk.CheckState{passState(code+".ok", okMsg)}
	}
	return states
}

// EvalPerHTTPS calls fn for each successful HTTPS probe and returns the
// concatenated states. If no HTTPS probe succeeded, returns a single
// Unknown state with code+".no_https".
//
// Use this for rules that emit one CheckState per probe — the most common
// shape. Rules that need access to all probes at once (aggregation,
// cross-probe comparisons) should call successfulHTTPSProbes directly.
func EvalPerHTTPS(data *HTTPData, code string, fn func(p HTTPProbe) sdk.CheckState) []sdk.CheckState {
	probes := successfulHTTPSProbes(data.Probes)
	if len(probes) == 0 {
		return []sdk.CheckState{unknownState(code+".no_https", "No successful HTTPS probe to evaluate.")}
	}
	out := make([]sdk.CheckState, 0, len(probes))
	for _, p := range probes {
		out = append(out, fn(p))
	}
	return out
}