package jnpf.elnService;

import jnpf.elnEntity.runtime.ElnRecordFieldValueEntity;
import jnpf.elnEntity.template.ElnTemplateBindingEntity;

import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.Set;

public interface ElnCrossTemplateSnapshotResolver {
    Map<String, ElnRecordFieldValueEntity> resolve(String tenantId, String targetTestWorkItemId,
                                                    List<ElnTemplateBindingEntity> targetBindings);

    /**
     * Re-resolves persisted cross-template targets by their immutable binding identity.
     * This keeps explicit synchronization independent from the currently editable template.
     */
    default Map<String, ElnRecordFieldValueEntity> resolveByBindingIds(String tenantId,
            String targetTestWorkItemId, Set<String> targetBindingIds) {
        return Collections.emptyMap();
    }

    /**
     * Re-resolves persisted cross-template snapshots without changing them.
     * A caller can use every returned issue to block a state transition while
     * preserving the original snapshot as audit evidence.
     */
    default List<SnapshotIssue> validatePersistedSnapshots(String tenantId, String targetTestWorkItemId,
            List<ElnRecordFieldValueEntity> targetValues) {
        return Collections.emptyList();
    }

    final class SnapshotIssue {
        private final String code;
        private final String message;
        private final String targetBindingId;
        private final String targetFieldCode;
        private final String sourceTemplateCode;

        public SnapshotIssue(String code, String message, String targetBindingId,
                String targetFieldCode, String sourceTemplateCode) {
            this.code = code;
            this.message = message;
            this.targetBindingId = targetBindingId;
            this.targetFieldCode = targetFieldCode;
            this.sourceTemplateCode = sourceTemplateCode;
        }

        public String getCode() { return code; }
        public String getMessage() { return message; }
        public String getTargetBindingId() { return targetBindingId; }
        public String getTargetFieldCode() { return targetFieldCode; }
        public String getSourceTemplateCode() { return sourceTemplateCode; }
    }

    static ElnCrossTemplateSnapshotResolver none() {
        return (tenantId, testWorkItemId, bindings) -> Collections.emptyMap();
    }
}