'use strict';

const {
  RegExpPrototypeExec,
} = primordials;

const {
  prepareMainThreadExecution,
  markBootstrapComplete,
} = require('internal/process/pre_execution');
const { getOptionValue } = require('internal/options');
const { emitExperimentalWarning } = require('internal/util');

//const isEntryURL = getOptionValue('--entry-url');
const mainEntry = prepareMainThreadExecution(false); //(!isEntryURL);

markBootstrapComplete();

// Necessary to reset RegExp statics before user code runs.
RegExpPrototypeExec(/^/, '');

//if (isEntryURL) {
//  emitExperimentalWarning('--entry-url');
//}
//require('internal/modules/cjs/loader').Module.runMain(mainEntry);

const os = require('os');

let defaultTarget = '';
if (os.platform() === 'linux') {
  defaultTarget = 'linux';
}
else if (os.platform() === 'win32') {
  defaultTarget = 'windows';
}
else if (os.platform() === 'freebsd') {
  defaultTarget = 'freebsd';
}
else {
  defaultTarget = 'osx';
}

let options = [
  {
    full: 'from',
    value: true,
    description: 'Location of your project',
    metavar: 'file',
    default: '.'
  },
  {
    full: 'to',
    value: true,
    metavar: 'file',
    description: 'Build location',
    default: 'build'
  },
  {
    full: 'target',
    short: 't',
    value: true,
    description: 'Target platform',
    default: defaultTarget
  },
  {
    full: 'vr',
    value: true,
    description: 'Target VR device',
    default: 'none'
  },
  {
    full: 'pch',
    description: 'Use precompiled headers for C++ targets',
    value: false
  },
  {
    full: 'intermediate',
    description: 'Intermediate location for object files.',
    value: true,
    default: '',
    hidden: true
  },
  {
    full: 'graphics',
    short: 'g',
    description: 'Graphics API to use',
    value: true,
    default: 'default'
  },
  {
    full: 'arch',
    description: 'Target architecture for compilation',
    value: true,
    default: 'default'
  },
  {
    full: 'audio',
    short: 'a',
    description: 'Audio API to use',
    value: true,
    default: 'default'
  },
  {
    full: 'visualstudio',
    short: 'v',
    description: 'Version of Visual Studio to use',
    value: true,
    default: 'vs2022'
  },
  {
    full: 'compile',
    description: 'Compile executable',
    value: false
  },
  {
    full: 'run',
    description: 'Run executable',
    value: false
  },
  {
    full: 'update',
    description: 'Update Kore and its submodules',
    value: false
  },
  {
    full: 'debug',
    description: 'Compile in debug mode',
    value: false
  },
  {
    full: 'server',
    description: 'Run local HTTP server for html5 target',
    value: false
  },
  {
    full: 'port',
    description: 'Running port for the server',
    metavar: 'n',
    value: true,
    default: 8080
  },
  {
    full: 'noshaders',
    description: 'Do not compile shaders',
    value: false
  },
  {
    full: 'kore',
    short: 'k',
    description: 'Location of Kore directory',
    metavar: 'dir',
    value: true,
    default: ''
  },
  {
    full: 'init',
    description: 'Initialize a Kore project inside the current directory',
    value: false
  },
  {
    full: 'name',
    description: 'Project name to use when initializing a project',
    value: true,
    default: 'Project'
  },
  {
    full: 'kfile',
    value: true,
    description: 'Name of your kfile',
    metavar: 'file',
    default: 'kfile.js'
  },
  {
    full: 'compiler',
    value: true,
    description: 'Use a specific compiler',
    metavar: 'file',
    default: 'default'
  },
  {
    full: 'onlyshaders',
    value: false,
    description: 'Compile only shaders'
  },
  {
    full: 'nosigning',
    value: false,
    description: 'Disable code signing for iOS'
  },
  {
    full: 'lib',
    value: false,
    description: 'Compile to a static library'
  },
  {
    full: 'dynlib',
    value: false,
    description: 'Compile to a dynamic library'
  },
  {
    full: 'vscode',
    value: false,
    description: 'Create a vscode project (used automatically by the vscode Kore extension)'
  },
  {
    full: 'tolang',
    value: true,
    description: 'Export IDL specified in kfile to wrapper for specified language'
  },
  {
    full: 'json',
    value: false,
    description: 'Export a JSON file that describes the project'
  },
  {
    full: 'stdout',
    value: false,
    description: 'Output to stdout instead of to a file. Currently only applies to --json.'
  },
  {
    full: 'cores',
    value: true,
    description: 'Specify how many cores are used (by default all available cores are used)',
    metavar: 'n'
  },
  {
    full: 'nosymlinks',
    value: false,
    description: 'Do not follow symbolic links when searching for files'
  },
  {
    full: 'outputintermediatespirv',
    value: false,
    description: 'Write the intermediate spirv generated by glslang to a file - useful for debugging shader-problems'
  },
  {
    full: 'cc',
    value: true,
    description: 'Custom path to C compiler (Currently only available on Linux)',
    metavar: 'file',
    default: ''
  },
  {
    full: 'cxx',
    value: true,
    description: 'Custom path to CPP compiler (Currently only available on Linux)',
    metavar: 'file',
    default: ''
  },
  {
    full: 'ar',
    value: true,
    description: 'Custom path to ar (Currently only available on Linux)',
    metavar: 'file',
    default: ''
  },
  {
    full: 'strip',
    value: true,
    description: 'Custom path to strip',
    metavar: 'file',
    default: ''
  },
  {
    full: 'meson',
    value: false,
    description: 'Export a meson build file'
  },
  {
    // this is parsed and removed in src/node_main.cc
    full: 'dev',
    value: true,
    description: 'Use the JavaScript from the kmake repo that path points to',
    metavar: 'path',
    default: ''
  },
  {
    full: 'open',
    value: false,
    description: 'Open the created project in its default application (usually your IDE)'
  },
  {
    full: 'option',
    value: true,
    description: 'Pass multiple options to the kfile',
    metavar: 'k,k=v',
    default: {}
  }
];

let parsedOptions = {

};

function printHelp() {
  console.log('kmake options:');
  for (let o in options) {
    let option = options[o];
    if (option.hidden) continue;
    var begin = option.short ? `-${option.short},` : '   ';
    begin += ` --${option.full}`;
    if (option.value) begin += ` <${option.metavar ?? 'name'}>`;
    var end = option.default ? ` (default: ${option.default})` : '';
    console.log(`  ${begin.padEnd(26)}  ${option.description}${end}`);
  }
}

for (let o in options) {
  let option = options[o];
  if (option.value) {
    parsedOptions[option.full] = option.default;
  }
  else {
    parsedOptions[option.full] = false;
  }
}

let args = process.argv;
for (let i = 1; i < args.length; ++i) {
  let arg = args[i];

  if (arg[0] === '-') {
    if (arg[1] === '-') {
      if (arg.substr(2) === 'help') {
        printHelp();
        process.exit();
      }
      let found = false;
      for (let o in options) {
        let option = options[o];
        if (arg.substr(2) === option.full) {
          found = true;
          if (option.value) {
            ++i;
            if (option.full == 'option') {
              let optionKey = args[i];
              let optionValue = option.value;
              let optionKeyEqualIndex = optionKey.indexOf("=");
              if (optionKeyEqualIndex != -1) {
                optionValue = optionKey.substring(optionKeyEqualIndex+1, optionKey.length);
                optionKey = optionKey.substring(0, optionKeyEqualIndex);
              }
              parsedOptions[option.full][optionKey] = optionValue;
            }
            else {
              parsedOptions[option.full] = args[i];
            }
          }
          else {
            parsedOptions[option.full] = true;
          }
        }
      }
      if (!found) throw 'Option ' + arg + ' not found.';
    }
    else {
      if (arg[1] === 'h') {
        printHelp();
        process.exit();
      }
      if (arg.length !== 2) throw 'Wrong syntax for option ' + arg + ' (maybe try -' + arg + ' instead).';
      let found = false;
      for (let o in options) {
        let option = options[o];
        if (option.short && arg[1] === option.short) {
          found = true;
          if (option.value) {
            ++i;
            if (option.full == 'option') {
              let optionKey = args[i];
              let optionValue = option.value;
              let optionKeyEqualIndex = optionKey.indexOf("=");
              if (optionKeyEqualIndex != -1) {
                optionValue = optionKey.substring(optionKeyEqualIndex+1, optionKey.length);
                optionKey = optionKey.substring(0, optionKeyEqualIndex);
              }
              parsedOptions[option.full][optionKey] = optionValue;
            }
            else {
              parsedOptions[option.full] = args[i];
            }
          }
          else {
            parsedOptions[option.full] = true;
          }
        }
      }
      if (!found) throw 'Option ' + arg + ' not found.';
    }
  }
  else {
    parsedOptions.target = arg.toLowerCase();
  }
}

if (parsedOptions.run) {
  parsedOptions.compile = true;
}

const logInfo = (text, newline) => {
  if (newline) {
    console.log(text);
  }
  else {
    process.stdout.write(text);
  }
};

const logError = (text, newline) => {
  if (newline) {
    console.error(text);
  }
  else {
    process.stderr.write(text);
  }
};

function runKmake() {
  global.__dirname = require('path').dirname(process.execPath);
  const promise = require('kmake/main').run(parsedOptions, { info: logInfo, error: logError });
  promise
    .then(() => {
      console.log('Done.');
      process.exit();
    })
    .catch(err => {
      console.log('Error: ' + err);
      process.exit(1);
    });
}

function runServer() {
  global.__dirname = require('path').dirname(process.execPath);
  const promise = require('kmake/server').run(parsedOptions, { info: logInfo, error: logError });
  promise
    .then(() => {

    })
    .catch(err => {
      console.log('Error: ' + err);
      process.exit(1);
    });
}

if (parsedOptions.init) {
  console.log('Initializing Kore project.\n');
  require('kmake/init').run(parsedOptions.name, parsedOptions.from, parsedOptions.projectfile);
  process.exit();
}
else if (parsedOptions.server) {
  runServer();
}
else if (parsedOptions.update) {
  console.log('Updating everything...');
  require('child_process').spawnSync('git', ['pull', 'origin', 'master'], { stdio: 'inherit', stderr: 'inherit' });
  require('child_process').spawnSync('git', ['submodule', 'update', '--init', '--recursive'], { stdio: 'inherit', stderr: 'inherit' });
}
else {
  runKmake();
}