system({
    title: "Math expression evaluator",
    description: "Register a function that evaluates math expressions",
})

export default function (ctx: ChatGenerationContext) {
    const { defTool } = ctx

    defTool(
        "math_eval",
        "Evaluates a math expression. Do NOT try to compute arithmetic operations yourself, use this tool.",
        {
            type: "object",
            properties: {
                expression: {
                    type: "string",
                    description:
                        "Math expression to evaluate using mathjs format. Use ^ for power operator.",
                },
            },
            required: ["expression"],
        },
        async (args) => {
            const { context, expression } = args
            const res = String((await parsers.math(expression)) ?? "?")
            context.log(`math: ${expression} => ${res}`)
            return res
        }
    )
}