#!/usr/bin/env nim
# Copyright (c) 2026 Nexus Foundation
# Licensed under the Libertaria Sovereign License (LSL-1.0)
# See legal/LICENSE_SOVEREIGN.md for details.

# NIP MVP - Minimal Viable Product CLI
# Simple, focused package grafting from Nix, PKGSRC, and Pacman

import std/[os, strutils, strformat]
import src/nimpak/cli/graft_commands
import src/nimpak/cli/bootstrap_commands
import src/nimpak/cli/store_commands

const
  Version = "0.1.0-mvp"
  Banner = """
🌱 NIP v$1 - Universal Package Grafting
   Graft packages from Nix, PKGSRC, and Pacman
""" % [Version]

proc showHelp() =
  echo Banner
  echo """
USAGE:
  nip <command> [arguments] [options]

COMMANDS:
  graft <package>         Graft a package (auto-detect source)
  graft <source>:<pkg>    Graft from specific source
  remove <package>        Remove an installed package
  list                    List installed packages
  list --source=<src>     List packages from specific source
  info <package>          Show package information
  status                  Show system status
  doctor                  Check system health
  setup                   Setup system integration (PATH, libraries)
  bootstrap               Build tool management (nix, pkgsrc, gentoo)
  store                   Interact with Content-Addressable Storage (CAS)
  config [show|init]      Show or initialize configuration
  logs [lines]            Show recent log entries (default: 50)
  search <query>          Search for packages (coming soon)

SOURCES:
  nix                     Nix/nixpkgs packages
  pkgsrc                  NetBSD PKGSRC packages
  pacman                  Arch Linux Pacman packages

OPTIONS:
  --verbose, -v           Verbose output
  --help, -h              Show this help
  --version               Show version

EXAMPLES:
  nip graft nix:firefox           # Graft Firefox from Nix
  nip graft pkgsrc:vim            # Graft Vim from PKGSRC
  nip graft hello                 # Auto-detect source for hello
  nip list                        # List all installed packages
  nip list --source=nix           # List Nix packages only
  nip info firefox                # Show Firefox info
  nip remove firefox              # Remove Firefox
  nip status                      # Show system status
  nip doctor                      # Check system health

DIRECTORIES:
  /Programs/<Name>/<Version>/     Package installation
  /System/Links/Executables/      Binaries (in PATH)
  /System/Links/Libraries/        Shared libraries
  /var/nip/db/packages.json       Package database

MORE INFO:
  https://git.maiwald.work/Nexus/NexusToolKit
"""

proc showVersion() =
  echo fmt"NIP version {Version}"

proc main() =
  let args = commandLineParams()

  if args.len == 0:
    showHelp()
    quit(0)

  # Parse global options
  var verbose = false
  var remainingArgs: seq[string] = @[]

  for arg in args:
    case arg
    of "--verbose", "-v":
      verbose = true
    of "--help", "-h":
      showHelp()
      quit(0)
    of "--version":
      showVersion()
      quit(0)
    else:
      remainingArgs.add(arg)

  if remainingArgs.len == 0:
    showHelp()
    quit(0)

  let command = remainingArgs[0].toLower()
  let commandArgs = if remainingArgs.len > 1: remainingArgs[1..^1] else: @[]

  # Dispatch command
  var exitCode = 0

  try:
    # Handle commands that don't need initialization
    if command == "setup":
      exitCode = setupCommand(verbose)
      quit(exitCode)

    if command == "config":
      let action = if commandArgs.len > 0: commandArgs[0] else: "show"
      exitCode = configCommand(action, verbose)
      quit(exitCode)

    if command == "platform":
      exitCode = platformCommand(verbose)
      quit(exitCode)

    # Initialize graft commands for other commands
    initGraftCommands(verbose)

    case command
    of "graft", "install":
      if commandArgs.len == 0:
        echo "Error: Package name required"
        echo "Usage: nip graft <package> or nip graft <source>:<package>"
        exitCode = 1
      else:
        exitCode = graftCommand(commandArgs[0], verbose)

    of "remove", "uninstall":
      if commandArgs.len == 0:
        echo "Error: Package name required"
        echo "Usage: nip remove <package>"
        exitCode = 1
      else:
        exitCode = removeCommand(commandArgs[0], verbose)

    of "list", "ls":
      var source = ""
      for arg in commandArgs:
        if arg.startsWith("--source="):
          source = arg.split("=", 1)[1]
      exitCode = listCommand(source, verbose)

    of "info", "show":
      if commandArgs.len == 0:
        echo "Error: Package name required"
        echo "Usage: nip info <package>"
        exitCode = 1
      else:
        exitCode = infoCommand(commandArgs[0], verbose)

    of "status":
      exitCode = statusCommand(verbose)

    of "doctor", "check":
      exitCode = doctorCommand(verbose)

    of "search":
      if commandArgs.len == 0:
        echo "Error: Search query required"
        echo "Usage: nip search <query>"
        exitCode = 1
      else:
        exitCode = searchCommand(commandArgs[0], "", verbose)

    of "logs":
      let lines = if commandArgs.len > 0:
        try: parseInt(commandArgs[0])
        except: 50
      else: 50
      exitCode = logsCommand(lines, verbose)

    of "help":
      showHelp()
      exitCode = 0

    of "bootstrap":
      if commandArgs.len == 0:
        bootstrapHelpCommand()
        exitCode = 0
      else:
        let subCmd = commandArgs[0].toLower()
        let subArgs = if commandArgs.len > 1: commandArgs[1..^1] else: @[]
        case subCmd
        of "list":
          exitCode = bootstrapListCommand()
        of "install":
          if subArgs.len == 0:
            echo "Error: Tool name required"
            echo "Usage: nip bootstrap install <tool>"
            exitCode = 1
          else:
            exitCode = bootstrapInstallCommand(subArgs[0])
        of "remove":
          if subArgs.len == 0:
            echo "Error: Tool name required"
            echo "Usage: nip bootstrap remove <tool>"
            exitCode = 1
          else:
            exitCode = bootstrapRemoveCommand(subArgs[0])
        of "info":
          if subArgs.len == 0:
            echo "Error: Tool name required"
            echo "Usage: nip bootstrap info <tool>"
            exitCode = 1
          else:
            exitCode = bootstrapInfoCommand(subArgs[0])
        of "recipes":
          exitCode = bootstrapListRecipesCommand()
        of "update-recipes":
          exitCode = bootstrapUpdateRecipesCommand()
        of "validate":
          if subArgs.len == 0:
            echo "Error: Tool name required"
            echo "Usage: nip bootstrap validate <tool>"
            exitCode = 1
          else:
            exitCode = bootstrapValidateRecipeCommand(subArgs[0])
        of "help":
          bootstrapHelpCommand()
          exitCode = 0
        else:
          echo fmt"Error: Unknown bootstrap subcommand '{subCmd}'"
          bootstrapHelpCommand()
          exitCode = 1

    of "store":
      exitCode = dispatchStoreCommand(commandArgs, verbose)

    else:
      echo fmt"Error: Unknown command '{command}'"
      echo "Run 'nip --help' for usage information"
      exitCode = 1

  except Exception as e:
    echo fmt"Fatal error: {e.msg}"
    if verbose:
      echo "Stack trace:"
      echo e.getStackTrace()
    exitCode = 1

  quit(exitCode)

when isMainModule:
  main()