using HSchool.Content;

namespace HSchool.Server.Api;

internal sealed record SpeechRulesResponse(
    string Students,
    string Staff,
    string? PendingStudents,
    string? PendingStaff)
{
    public static SpeechRulesResponse From(SchoolSpeechRules rules) =>
        new(rules.Students, rules.Staff, rules.PendingStudents, rules.PendingStaff);
}

internal sealed record SetSpeechRulesRequest(string? Students, string? Staff);

internal enum SpeechRulesError
{
    None,
    UnknownSchool,
    UnknownPolicy,
}

internal sealed record SpeechRulesOutcome(SpeechRulesError Error, SpeechRulesResponse? Rules)
{
    public static SpeechRulesOutcome Ok(SchoolSpeechRules rules) =>
        new(SpeechRulesError.None, SpeechRulesResponse.From(rules));

    public static SpeechRulesOutcome Fail(SpeechRulesError error) => new(error, null);
}

internal static class SpeechRulesValidation
{
    public static bool TryParse(string value, out string policy, out SpeechRulesError error)
    {
        if (!SpeechPolicies.IsKnown(value))
        {
            policy = "";
            error = SpeechRulesError.UnknownPolicy;
            return false;
        }

        policy = value;
        error = SpeechRulesError.None;
        return true;
    }
}