(function () {
  /**
   * Nexus Terminal — terminal colour themes.
   * Provides a collection of preset xterm.js colour schemes and a manager
   * for applying them to terminal instances.
   */

  /**
   * Preset terminal colour themes.
   * Each entry contains the full xterm.js theme object.
   */
  const THEMES = {
    charcoal: {
      label: "Charcoal (Default)",
      theme: {
        background: "#1c1c1c",
        foreground: "#e4e4e4",
        cursor: "#4ecdc4",
        cursorAccent: "#1c1c1c",
        selectionBackground: "rgba(78, 205, 196, 0.3)",
        selectionForeground: "#ffffff",
        black: "#1c1c1c",
        red: "#ef5350",
        green: "#66bb6a",
        yellow: "#ffa726",
        blue: "#42a5f5",
        magenta: "#ab47bc",
        cyan: "#4ecdc4",
        white: "#e4e4e4",
        brightBlack: "#555555",
        brightRed: "#ff7043",
        brightGreen: "#81c784",
        brightYellow: "#ffcc02",
        brightBlue: "#64b5f6",
        brightMagenta: "#ce93d8",
        brightCyan: "#80deea",
        brightWhite: "#ffffff",
      },
    },

    "solarized-dark": {
      label: "Solarized Dark",
      theme: {
        background: "#002b36",
        foreground: "#839496",
        cursor: "#93a1a1",
        cursorAccent: "#002b36",
        selectionBackground: "rgba(147, 161, 161, 0.3)",
        selectionForeground: "#fdf6e3",
        black: "#073642",
        red: "#dc322f",
        green: "#859900",
        yellow: "#b58900",
        blue: "#268bd2",
        magenta: "#d33682",
        cyan: "#2aa198",
        white: "#eee8d5",
        brightBlack: "#586e75",
        brightRed: "#cb4b16",
        brightGreen: "#586e75",
        brightYellow: "#657b83",
        brightBlue: "#839496",
        brightMagenta: "#6c71c4",
        brightCyan: "#93a1a1",
        brightWhite: "#fdf6e3",
      },
    },

    monokai: {
      label: "Monokai",
      theme: {
        background: "#272822",
        foreground: "#f8f8f2",
        cursor: "#f8f8f0",
        cursorAccent: "#272822",
        selectionBackground: "rgba(73, 72, 62, 0.6)",
        selectionForeground: "#f8f8f2",
        black: "#272822",
        red: "#f92672",
        green: "#a6e22e",
        yellow: "#f4bf75",
        blue: "#66d9ef",
        magenta: "#ae81ff",
        cyan: "#a1efe4",
        white: "#f8f8f2",
        brightBlack: "#75715e",
        brightRed: "#f92672",
        brightGreen: "#a6e22e",
        brightYellow: "#f4bf75",
        brightBlue: "#66d9ef",
        brightMagenta: "#ae81ff",
        brightCyan: "#a1efe4",
        brightWhite: "#f9f8f5",
      },
    },

    nord: {
      label: "Nord",
      theme: {
        background: "#2e3440",
        foreground: "#d8dee9",
        cursor: "#d8dee9",
        cursorAccent: "#2e3440",
        selectionBackground: "rgba(136, 192, 208, 0.3)",
        selectionForeground: "#eceff4",
        black: "#3b4252",
        red: "#bf616a",
        green: "#a3be8c",
        yellow: "#ebcb8b",
        blue: "#81a1c1",
        magenta: "#b48ead",
        cyan: "#88c0d0",
        white: "#e5e9f0",
        brightBlack: "#4c566a",
        brightRed: "#bf616a",
        brightGreen: "#a3be8c",
        brightYellow: "#ebcb8b",
        brightBlue: "#81a1c1",
        brightMagenta: "#b48ead",
        brightCyan: "#8fbcbb",
        brightWhite: "#eceff4",
      },
    },

    dracula: {
      label: "Dracula",
      theme: {
        background: "#282a36",
        foreground: "#f8f8f2",
        cursor: "#f8f8f2",
        cursorAccent: "#282a36",
        selectionBackground: "rgba(68, 71, 90, 0.6)",
        selectionForeground: "#f8f8f2",
        black: "#21222c",
        red: "#ff5555",
        green: "#50fa7b",
        yellow: "#f1fa8c",
        blue: "#bd93f9",
        magenta: "#ff79c6",
        cyan: "#8be9fd",
        white: "#f8f8f2",
        brightBlack: "#6272a4",
        brightRed: "#ff6e6e",
        brightGreen: "#69ff94",
        brightYellow: "#ffffa5",
        brightBlue: "#d6acff",
        brightMagenta: "#ff92df",
        brightCyan: "#a4ffff",
        brightWhite: "#ffffff",
      },
    },

    "one-dark": {
      label: "One Dark",
      theme: {
        background: "#282c34",
        foreground: "#abb2bf",
        cursor: "#528bff",
        cursorAccent: "#282c34",
        selectionBackground: "rgba(82, 139, 255, 0.3)",
        selectionForeground: "#abb2bf",
        black: "#282c34",
        red: "#e06c75",
        green: "#98c379",
        yellow: "#e5c07b",
        blue: "#61afef",
        magenta: "#c678dd",
        cyan: "#56b6c2",
        white: "#abb2bf",
        brightBlack: "#5c6370",
        brightRed: "#e06c75",
        brightGreen: "#98c379",
        brightYellow: "#e5c07b",
        brightBlue: "#61afef",
        brightMagenta: "#c678dd",
        brightCyan: "#56b6c2",
        brightWhite: "#ffffff",
      },
    },

    "gruvbox-dark": {
      label: "Gruvbox Dark",
      theme: {
        background: "#282828",
        foreground: "#ebdbb2",
        cursor: "#ebdbb2",
        cursorAccent: "#282828",
        selectionBackground: "rgba(214, 93, 14, 0.3)",
        selectionForeground: "#ebdbb2",
        black: "#282828",
        red: "#cc241d",
        green: "#98971a",
        yellow: "#d79921",
        blue: "#458588",
        magenta: "#b16286",
        cyan: "#689d6a",
        white: "#a89984",
        brightBlack: "#928374",
        brightRed: "#fb4934",
        brightGreen: "#b8bb26",
        brightYellow: "#fabd2f",
        brightBlue: "#83a598",
        brightMagenta: "#d3869b",
        brightCyan: "#8ec07c",
        brightWhite: "#ebdbb2",
      },
    },

    "tokyo-night": {
      label: "Tokyo Night",
      theme: {
        background: "#1a1b26",
        foreground: "#a9b1d6",
        cursor: "#c0caf5",
        cursorAccent: "#1a1b26",
        selectionBackground: "rgba(41, 46, 66, 0.9)",
        selectionForeground: "#c0caf5",
        black: "#15161e",
        red: "#f7768e",
        green: "#9ece6a",
        yellow: "#e0af68",
        blue: "#7aa2f7",
        magenta: "#bb9af7",
        cyan: "#7dcfff",
        white: "#a9b1d6",
        brightBlack: "#414868",
        brightRed: "#f7768e",
        brightGreen: "#9ece6a",
        brightYellow: "#e0af68",
        brightBlue: "#7aa2f7",
        brightMagenta: "#bb9af7",
        brightCyan: "#7dcfff",
        brightWhite: "#c0caf5",
      },
    },

    "catppuccin-mocha": {
      label: "Catppuccin Mocha",
      theme: {
        background: "#1e1e2e",
        foreground: "#cdd6f4",
        cursor: "#f5e0dc",
        cursorAccent: "#1e1e2e",
        selectionBackground: "rgba(88, 91, 112, 0.5)",
        selectionForeground: "#cdd6f4",
        black: "#45475a",
        red: "#f38ba8",
        green: "#a6e3a1",
        yellow: "#f9e2af",
        blue: "#89b4fa",
        magenta: "#f5c2e7",
        cyan: "#94e2d5",
        white: "#bac2de",
        brightBlack: "#585b70",
        brightRed: "#f38ba8",
        brightGreen: "#a6e3a1",
        brightYellow: "#f9e2af",
        brightBlue: "#89b4fa",
        brightMagenta: "#f5c2e7",
        brightCyan: "#94e2d5",
        brightWhite: "#a6adc8",
      },
    },

    "rose-pine": {
      label: "Rosé Pine",
      theme: {
        background: "#191724",
        foreground: "#e0def4",
        cursor: "#524f67",
        cursorAccent: "#e0def4",
        selectionBackground: "rgba(110, 106, 134, 0.4)",
        selectionForeground: "#e0def4",
        black: "#26233a",
        red: "#eb6f92",
        green: "#31748f",
        yellow: "#f6c177",
        blue: "#9ccfd8",
        magenta: "#c4a7e7",
        cyan: "#ebbcba",
        white: "#e0def4",
        brightBlack: "#6e6a86",
        brightRed: "#eb6f92",
        brightGreen: "#31748f",
        brightYellow: "#f6c177",
        brightBlue: "#9ccfd8",
        brightMagenta: "#c4a7e7",
        brightCyan: "#ebbcba",
        brightWhite: "#e0def4",
      },
    },

    "solarized-light": {
      label: "Solarized Light",
      theme: {
        background: "#fdf6e3",
        foreground: "#657b83",
        cursor: "#586e75",
        cursorAccent: "#fdf6e3",
        selectionBackground: "rgba(7, 54, 66, 0.2)",
        selectionForeground: "#073642",
        black: "#073642",
        red: "#dc322f",
        green: "#859900",
        yellow: "#b58900",
        blue: "#268bd2",
        magenta: "#d33682",
        cyan: "#2aa198",
        white: "#eee8d5",
        brightBlack: "#002b36",
        brightRed: "#cb4b16",
        brightGreen: "#586e75",
        brightYellow: "#657b83",
        brightBlue: "#839496",
        brightMagenta: "#6c71c4",
        brightCyan: "#93a1a1",
        brightWhite: "#fdf6e3",
      },
    },
  };

  /**
   * Returns the theme object for the given theme name.
   * Falls back to 'charcoal' if not found.
   * @param {string} name
   * @returns {Object} xterm.js theme object
   */
  function getTerminalTheme(name) {
    const entry = THEMES[name || "charcoal"];
    return entry ? entry.theme : THEMES.charcoal.theme;
  }

  /**
   * Returns all theme names and labels for building a selector.
   * @returns {Array<{value: string, label: string}>}
   */
  function listTerminalThemes() {
    return Object.entries(THEMES).map(([value, entry]) => ({
      value,
      label: entry.label,
    }));
  }

  window.NexusTerminal = window.NexusTerminal || {};
  window.NexusTerminal.getTerminalTheme = getTerminalTheme;
  window.NexusTerminal.listTerminalThemes = listTerminalThemes;
})();