const std = @import("std");

const parser = @import("../shell/parser.zig");

const cd = @import("cmds/cd.zig");
const echo = @import("cmds/echo.zig");
const exit = @import("cmds/exit.zig");
const pwd = @import("cmds/pwd.zig");
const run = @import("cmds/run.zig");

const types = @import("types.zig");

const CommandFn = *const fn (types.BuiltinCommandContext) anyerror!void;

const commands = std.StaticStringMap(CommandFn).initComptime(.{
    .{ "cd", cd.execute },
    .{ "pwd", pwd.execute },
    .{ "run", run.execute },
    .{ "echo", echo.execute },
    .{ "exit", exit.execute },
});

pub fn execute(
    io: std.Io,
    allocator: std.mem.Allocator,
    shell: *types.Shell,
    command: parser.Command,
) !bool {
    if (command.argv.len == 0)
        return true;

    const name = command.argv[0];

    const execute_fn = commands.get(name) orelse
        return false;

    try execute_fn(.{
        .io = io,
        .allocator = allocator,
        .shell = shell,
        .argv = command.argv,
    });

    return true;
}