const assert = require("node:assert/strict")
const fs = require("node:fs")
const path = require("node:path")
const vm = require("node:vm")
const { test } = require("node:test")
const { transformSync } = require("esbuild")

const source = fs.readFileSync(path.join(__dirname, "../client/src/common/cdlEventHandler.ts"), "utf8")
const compiled = transformSync(source, { loader: "ts", format: "cjs" }).code
const context = { module: { exports: {} } }
vm.runInNewContext(compiled, context)
const { cdlEventHandlerAtLine, createCdlEventHandlerSnippet } = context.module.exports

test("TOGGLE Off adds the defined globals to the event handler", () => {
    const cdl = `EVENT GDM_header
{
    PARAM product_status {
        TYPE o
        OPTIONS "Serie", "Prototyp"
    }
    PARAM stm_param_mpf_name
    {
        TYPE s
        TOGGLE Off
    }
    PARAM stm_param_wks_path {
        TYPE s
        TOGGLE Off
    }
}`
    const snippet = createCdlEventHandlerSnippet(cdlEventHandlerAtLine(cdl, 0))
    assert.match(snippet, /global mom_stm_param_mpf_name_defined/)
    assert.match(snippet, /global mom_stm_param_wks_path_defined/)
    assert.match(snippet, /global mom_product_status\n/)
    assert.doesNotMatch(snippet, /mom_product_status_defined/)
})

test("toggle detection ignores comments, strings, other events, and TOGGLE On", () => {
    const cdl = `EVENT first {
        PARAM plain { TYPE s UI_LABEL "TOGGLE Off { ignored }" }
        PARAM enabled { TOGGLE On }
        PARAM commented { TYPE s # TOGGLE Off
        }
        PARAM mom_disabled { TOGGLE off }
    }
    EVENT second { PARAM other { TOGGLE Off } }`
    const snippet = createCdlEventHandlerSnippet(cdlEventHandlerAtLine(cdl, 0))
    assert.match(snippet, /global mom_disabled_defined/)
    assert.equal((snippet.match(/_defined/g) ?? []).length, 1)
    assert.doesNotMatch(snippet, /mom_mom_|mom_other/)
})