<?php
namespace nulib\tools\pman;

use nulib\cl;
use nulib\ext\json;
use nulib\file;
use nulib\os\path;
use nulib\ValueException;

class ComposerFile {
  function __construct(string $composerFile=".", bool $ensureExists=true) {
    if (is_dir($composerFile)) $composerFile = path::join($composerFile, 'composer.json');
    if ($ensureExists && !file_exists($composerFile)) {
      $message = path::ppath($composerFile).": fichier introuvable";
      throw new ValueException($message);
    }
    $this->composerFile = $composerFile;
    $this->load();
  }

  protected string $composerFile;

  function getComposerFile(): string {
    return $this->composerFile;
  }

  protected ?array $data = null;

  protected function load(): array {
    if ($this->data === null) {
      $this->data = json::load($this->composerFile);
    }
    return $this->data;
  }

  function getv(string $pkey="", $default=null) {
    return cl::pget($this->data, $pkey, $default);
  }

  function geta(string $pkey="", ?array $default=[]): ?array {
    return cl::withn($this->getv($pkey, $default));
  }

  function getRequires(): array {
    return $this->geta("require");
  }

  function setRequire(string $dep, string $version): void {
    $this->setPkey("require.$dep", $version);
  }

  function getRequireDevs(): array {
    return $this->geta("require-dev");
  }

  function setRequireDev(string $dep, string $version): void {
    $this->setPkey("require-dev.$dep", $version);
  }

  function getRepositories(): array {
    return $this->geta("repositories");
  }

  function setRepositories(array $repositories): void {
    $this->data["repositories"] = $repositories;
  }

  function setPkey(string $pkey, $value): void {
    cl::pset($this->data, $pkey, $value);
  }

  function delPkey(string $pkey): void {
    cl::pdel($this->data, $pkey);
  }

  const PATHS = [
    "nulib/php" => "nulib",
  ];

  function selectProfile(string $profile, ComposerPmanFile $config): void {
    $config = $config->getProfileConfig($profile);
    // corriger les liens
    $deps = cl::merge(array_keys($config["require"]), array_keys($config["require-dev"]));
    $paths = [];
    foreach ($deps as $dep) {
      $path = cl::get(self::PATHS, $dep, $dep);
      $path = str_replace("/", "-", $path);
      $path = "../$path";
      $paths[$dep] = $path;
    }
    if ($config["link"]) {
      // Ajouter les liens
      $adds = [];
      $repositories = $this->getRepositories();
      foreach ($deps as $dep) {
        $found = false;
        foreach ($repositories as $repository) {
          if ($repository["type"] === "path" && $repository["url"] === $paths[$dep]) {
            $found = true;
            break;
          }
        }
        if (!$found) {
          $adds[] = [
            "type" => "path",
            "url" => $paths[$dep],
          ];
        }
      }
      if ($adds) {
        $this->setRepositories(cl::merge($adds, $repositories));
      }
    } else {
      // Supprimer les liens
      $dels = [];
      $repositories = $this->getRepositories();
      foreach ($deps as $dep) {
        foreach ($repositories as $key => $repository) {
          if ($repository["type"] === "path" && $repository["url"] === $paths[$dep]) {
            $dels[] = $key;
            break;
          }
        }
      }
      if ($dels) {
        foreach (array_reverse($dels) as $key) {
          unset($repositories[$key]);
        }
        $this->setRepositories(array_values($repositories));
      }
    }
    // corriger les versions
    foreach ($config["require"] as $dep => $version) {
      $this->data["require"][$dep] = $version;
    }
    foreach ($config["require-dev"] as $dep => $version) {
      $this->data["require-dev"][$dep] = $version;
    }
  }

  function getLocalDeps(): array {
    $deps = cl::merge(array_keys($this->getRequires()), array_keys($this->getRequireDevs()));
    $paths = [];
    foreach ($deps as $dep) {
      $path = cl::get(self::PATHS, $dep, $dep);
      $path = str_replace("/", "-", $path);
      $path = "../$path";
      $paths[$dep] = $path;
    }
    $repositories = $this->getRepositories();
    $localDeps = [];
    foreach ($deps as $dep) {
      foreach ($repositories as $key => $repository) {
        if ($repository["type"] === "path" && $repository["url"] === $paths[$dep]) {
          $localDeps[$dep] = $repository["url"];
          break;
        }
      }
    }
    return $localDeps;
  }

  function print(): void {
    $contents = json::with($this->data, json::INDENT_TABS);
    if ($contents) echo "$contents\n";
  }

  function write(): void {
    $contents = json::with($this->data, json::INDENT_TABS);
    file::writer($this->composerFile)->putContents("$contents\n");
  }
}