package prog8tests

import io.kotest.assertions.withClue
import io.kotest.core.spec.style.FunSpec
import io.kotest.matchers.shouldBe
import io.kotest.matchers.string.shouldStartWith
import prog8.code.core.ZeropageType
import prog8.code.core.internedStringsModuleName
import prog8.code.target.C64Target
import prog8.compiler.determineCompilationOptions
import prog8.compiler.parseMainModule
import prog8tests.helpers.ErrorReporterForTests
import prog8tests.helpers.compileText
import prog8tests.helpers.outputDir


class TestImportedModulesOrderAndOptions: FunSpec({

    test("testImportedModuleOrderAndMainModuleCorrect") {
        val result = compileText(
            C64Target(), false, """
%import textio
%import floats

main {
    sub start() {
        ; nothing
    }
}
""")!!
        result.compilerAst.toplevelModule.name shouldStartWith "on_the_fly_test"

        val moduleNames = result.compilerAst.modules.map { it.name }
        withClue("main module must be first") {
            moduleNames[0] shouldStartWith "on_the_fly_test"
        }
        withClue("module order in parse tree") {
            moduleNames.drop(1) shouldBe listOf(
                internedStringsModuleName,
                "textio",
                "syslib",
                "conv",
                "floats",
                "floats_functions",
                "math",
                "prog8_lib"
            )
        }
        result.compilerAst.toplevelModule.name shouldStartWith "on_the_fly_test"
    }

    test("testCompilationOptionsCorrectFromMain") {
        val result = compileText(
            C64Target(), false, """
%import textio
%import floats
%zeropage dontuse
%option no_sysinit

main {
    sub start() {
        ; nothing
    }
}
""")!!
        result.compilerAst.toplevelModule.name shouldStartWith "on_the_fly_test"
        val options = determineCompilationOptions(result.compilerAst, C64Target())
        options.floats shouldBe true
        options.zeropage shouldBe ZeropageType.DONTUSE
        options.noSysInit shouldBe true
    }

    test("testModuleOrderAndCompilationOptionsCorrectWithJustImports") {
        val errors = ErrorReporterForTests()
        val sourceText = """
%import textio
%import floats
%option no_sysinit
%zeropage dontuse            

main {
    sub start() {
        ; nothing
    }
}
"""
        val filenameBase = "on_the_fly_test_" + sourceText.hashCode().toUInt().toString(16)
        val filepath = outputDir.resolve("$filenameBase.p8")
        filepath.toFile().writeText(sourceText)
        val (program, options, importedfiles) = parseMainModule(filepath, errors, C64Target(), emptyList())

        program.toplevelModule.name shouldBe filenameBase
        withClue("all imports other than the test source must have been internal resources library files") {
            importedfiles.size shouldBe 1
        }
        withClue("module order in parse tree") {
            program.modules.map { it.name } shouldBe
                listOf(
                    internedStringsModuleName,
                    filenameBase,
                    "textio", "syslib", "conv", "floats", "floats_functions", "math", "prog8_lib"
                )
        }
        options.floats shouldBe true
        options.noSysInit shouldBe true
        withClue("zeropage option must be correctly taken from main module, not from float module import logic") {
            options.zeropage shouldBe ZeropageType.DONTUSE
        }
    }

})