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 * Copyright (C) 2026, Leo Galambos
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 *    This product includes software developed by the Egothor project.
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package zeroecho.pki.cli;

import zeroecho.pki.application.PkiOperationFailure;

/** Stable process exit-code mapping for the PKI command family. */
final class PkiExitCodes {

    /* default */ static final int SUCCESS = 0;
    /* default */ static final int INVALID_INVOCATION = 2;
    /* default */ static final int CONFIGURATION_FAILURE = 3;
    /* default */ static final int VALIDATION_OR_POLICY = 4;
    /* default */ static final int NOT_FOUND_OR_CONFLICT = 5;
    /* default */ static final int RECOVERY_REQUIRED = 6;
    /* default */ static final int EXTERNAL_OUTCOME_UNKNOWN = 7;
    /* default */ static final int RESOURCE_FAILURE = 8;
    /* default */ static final int INTERNAL_FAILURE = 9;
    /* default */ static final int CANCELLED = 130;

    private PkiExitCodes() {
    }

    /* default */ static int from(PkiPlanExecution execution) {
        int result = execution.planFailure().map(PkiExitCodes::from).orElse(SUCCESS);
        for (PkiPlanExecution.StepResult step : execution.steps()) {
            if (step.failure().isPresent()) {
                result = Math.max(result, from(step.failure().orElseThrow()));
            }
        }
        return result == SUCCESS && !execution.succeeded() ? VALIDATION_OR_POLICY : result;
    }

    private static int from(PkiOperationFailure failure) {
        return switch (failure) {
            case VALIDATION_FAILURE, POLICY_REJECTION -> VALIDATION_OR_POLICY;
            case NOT_FOUND, CONFLICT -> NOT_FOUND_OR_CONFLICT;
            case RECOVERY_REQUIRED -> RECOVERY_REQUIRED;
            case EXTERNAL_OUTCOME_UNKNOWN -> EXTERNAL_OUTCOME_UNKNOWN;
            case RESOURCE_FAILURE -> RESOURCE_FAILURE;
            case INTERNAL_FAILURE -> INTERNAL_FAILURE;
            case CANCELLED -> CANCELLED;
        };
    }
}