using System.Collections.Immutable;

namespace StellaOps.Scanner.EntryTrace.Parsing;

public abstract record ShellNode(ShellSpan Span);

public sealed record ShellScript(ImmutableArray<ShellNode> Nodes);

public sealed record ShellSpan(int StartLine, int StartColumn, int EndLine, int EndColumn);

public sealed record ShellCommandNode(
    string Command,
    ImmutableArray<ShellToken> Arguments,
    ShellSpan Span) : ShellNode(Span);

public sealed record ShellIncludeNode(
    string PathExpression,
    ImmutableArray<ShellToken> Arguments,
    ShellSpan Span) : ShellNode(Span);

public sealed record ShellExecNode(
    ImmutableArray<ShellToken> Arguments,
    ShellSpan Span) : ShellNode(Span);

public sealed record ShellIfNode(
    ImmutableArray<ShellConditionalBranch> Branches,
    ShellSpan Span) : ShellNode(Span);

public sealed record ShellConditionalBranch(
    ShellConditionalKind Kind,
    ImmutableArray<ShellNode> Body,
    ShellSpan Span,
    string? PredicateSummary);

public enum ShellConditionalKind
{
    If,
    Elif,
    Else
}

public sealed record ShellCaseNode(
    ImmutableArray<ShellCaseArm> Arms,
    ShellSpan Span) : ShellNode(Span);

public sealed record ShellCaseArm(
    ImmutableArray<string> Patterns,
    ImmutableArray<ShellNode> Body,
    ShellSpan Span);

public sealed record ShellRunPartsNode(
    string DirectoryExpression,
    ImmutableArray<ShellToken> Arguments,
    ShellSpan Span) : ShellNode(Span);