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/++
  read configuration files<BR>
  - read config files<BR>
  meta_config_files.d
+/
module sdp.meta.read_config_files;
static template configReadInSiteTOML() {
  import
    sdp.meta,
    sdp.output.paths_source,
    std.file,
    std.path;
  final string configReadInSiteTOML(M,E)(M manifest, E env) {
    auto conf_file_details = ConfigFilePaths!()(manifest, env);
    string conf_toml = conf_file_details.config_filename_site_toml;
    auto possible_config_path_locations = conf_file_details.possible_config_path_locations.config_local_site;
    string config_file_str;
    debug(io) {
      writeln("WARNING (io debug) in config filename: ", conf_toml);
      writeln("WARNING (io debug) in config possible path locations: ", possible_config_path_locations);
    }
    foreach(pth; possible_config_path_locations) {
      auto conf_file = asNormalizedPath(chainPath(to!string(pth), conf_toml)).array;
      if (config_file_str.length > 0) {
        break;
      }
      try {
        if (exists(conf_file)) {
          debug(io) {
            writeln("WARNING (io debug) in config file found: ", conf_file);
          }
          config_file_str = conf_file.readText;
          break;
        }
      }
      catch (ErrnoException ex) {
      }
      catch (FileException ex) {
      }
    }
    return config_file_str;
  }
}
static template configReadInDocTOML() {
  import
    sdp.meta,
    sdp.output.paths_source,
    std.file,
    std.path;
  final string configReadInDocTOML(M,E)(M manifest, E env) {
    auto conf_file_details = ConfigFilePaths!()(manifest, env);
    string conf_toml = conf_file_details.config_filename_document_toml;
    auto possible_config_path_locations = conf_file_details.possible_config_path_locations.sisu_document_make;
    string config_file_str;
    debug(io) {
      writeln("WARNING (io debug) in config filename: ", conf_toml);
      writeln("WARNING (io debug) in config possible path locations: ", possible_config_path_locations);
    }
    foreach(pth; possible_config_path_locations) {
      auto conf_file = asNormalizedPath(chainPath(to!string(pth), conf_toml)).array;
      if (config_file_str.length > 0) {
        break;
      }
      try {
        if (exists(conf_file)) {
          debug(io) {
            writeln("WARNING (io debug) in config file found: ", conf_file);
          }
          config_file_str = conf_file.readText;
          break;
        }
      }
      catch (ErrnoException ex) {
      }
      catch (FileException ex) {
      }
    }
    return config_file_str;
  }
}
static template configTOML() {
  import toml; //
  import
    sdp.meta,
    sdp.output.paths_source,
    std.file,
    std.path;
  auto configTOML(string configuration, string conf_toml_filename) {
    TOMLDocument _toml_conf;
    try {
      _toml_conf = parseTOML(configuration); // parseTOML(cast(string)(configuration));
    }
    catch(ErrnoException e) {
      stderr.writeln("Toml problem with content for ", conf_toml_filename);
      stderr.writeln(e.msg);
    }
    return _toml_conf;
  }
}
static template readConfigSite() {
  import
    sdp.meta,
    sdp.output.paths_source,
    std.file,
    std.path;
  final auto readConfigSite(M,E)(M _manifest, E _env) {
    string config_file_str;
    string conf_filename = "NONE";
    auto _conf_file_details = ConfigFilePaths!()(_manifest, _env);
    auto possible_config_path_locations = _conf_file_details.possible_config_path_locations.config_local_site;
    foreach(conf_fn; [_conf_file_details.config_filename_site_toml]) {
      foreach(pth; possible_config_path_locations) {
        auto conf_file = asNormalizedPath(chainPath(to!string(pth), conf_fn)).array;
        conf_filename = conf_fn;
        if (config_file_str.length > 0) {
          // conf_filename = conf_fn;
          break;
        }
        try {
          if (exists(conf_file)) {
            debug(io) {
              writeln("WARNING (io debug) in config file found: ", conf_file);
              // writeln(__LINE__, ": found: ", conf_file, " in ", pth);
            }
            config_file_str = conf_file.readText;
            break;
          }
        }
        catch (ErrnoException ex) {
        }
        catch (FileException ex) {
        }
      }
      if (config_file_str.length > 0) { break; }
    }
    struct _ConfContent {
      string filename() {
        return conf_filename;
      }
      string filetype() {
        return conf_filename.extension.chompPrefix(".");
      }
      auto content() {
        return config_file_str;
      }
    }
    return _ConfContent();
  }
}
static template readConfigDoc() {
  import
    sdp.meta,
    sdp.output.paths_source,
    std.file,
    std.path;
  final auto readConfigDoc(M,E)(M _manifest, E _env) {
    string config_file_str;
    string conf_filename = "NONE";
    auto _conf_file_details = ConfigFilePaths!()(_manifest, _env);
    auto possible_config_path_locations = _conf_file_details.possible_config_path_locations.sisu_document_make;
    foreach(conf_fn; [_conf_file_details.config_filename_document_toml]) {
      foreach(pth; possible_config_path_locations) {
        auto conf_file = asNormalizedPath(chainPath(to!string(pth), conf_fn)).array;
        conf_filename = conf_fn;
        if (config_file_str.length > 0) {
          // conf_filename = conf_fn;
          break;
        }
        try {
          if (exists(conf_file)) {
            debug(io) {
              writeln("WARNING (io debug) in config file found: ", conf_file);
            }
            config_file_str = conf_file.readText;
            break;
          }
        }
        catch (ErrnoException ex) {
        }
        catch (FileException ex) {
        }
      }
      if (config_file_str.length > 0) { break; }
    }
    struct _ConfContent {
      string filename() {
        return conf_filename;
      }
      string filetype() {
        return conf_filename.extension.chompPrefix(".");
      }
      auto content() {
        return config_file_str;
      }
    }
    return _ConfContent();
  }
}
static template configReadSiteTOML() {
  import
    sdp.meta,
    sdp.output.paths_source,
    std.file,
    std.path;
  import toml;
  final auto configReadSiteTOML(M,E)(M _manifest, E _env) {
    auto _configuration = configReadInSiteTOML!()(_manifest, _env);
    auto _conf_file_details = ConfigFilePaths!()(_manifest, _env);
    string _conf_toml = _conf_file_details.config_filename_site_toml;
    auto _toml_conf = configTOML!()(_configuration, _conf_toml);
    return _toml_conf;
  }
}
static template configReadDocTOML() {
  import
    sdp.meta,
    sdp.output.paths_source,
    std.file,
    std.path;
  import toml;
  final auto configReadDocTOML(M,E)(M _manifest, E _env) {
    auto _configuration = configReadInDocTOML!()(_manifest, _env);
    auto _conf_file_details = ConfigFilePaths!()(_manifest, _env);
    string _conf_toml = _conf_file_details.config_filename_document_toml;
    auto _toml_conf = configTOML!()(_configuration, _conf_toml);
    return _toml_conf;
  }
}