package cli

import (
	"fmt"

	"github.com/jandedobbeleer/oh-my-posh/src/ansi"
	"github.com/jandedobbeleer/oh-my-posh/src/engine"
	"github.com/jandedobbeleer/oh-my-posh/src/platform"
	"github.com/jandedobbeleer/oh-my-posh/src/shell"
	"github.com/jandedobbeleer/oh-my-posh/src/upgrade"

	"github.com/spf13/cobra"
)

var (
	printOutput bool
	strict      bool
	manual      bool

	initCmd = &cobra.Command{
		Use:   "init [bash|zsh|fish|powershell|pwsh|cmd|nu|tcsh|elvish|xonsh]",
		Short: "Initialize your shell and config",
		Long: `Initialize your shell and config.

See the documentation to initialize your shell: https://ohmyposh.dev/docs/installation/prompt.`,
		ValidArgs: []string{
			"bash",
			"zsh",
			"fish",
			"powershell",
			"pwsh",
			"cmd",
			"nu",
			"tcsh",
			"elvish",
			"xonsh",
		},
		Args: NoArgsOrOneValidArg,
		Run: func(cmd *cobra.Command, args []string) {
			if len(args) == 0 {
				_ = cmd.Help()
				return
			}
			runInit(args[0])
		},
	}
)

func init() {
	initCmd.Flags().BoolVarP(&printOutput, "print", "p", false, "print the init script")
	initCmd.Flags().BoolVarP(&strict, "strict", "s", false, "run in strict mode")
	initCmd.Flags().BoolVarP(&manual, "manual", "m", false, "enable/disable manual mode")
	_ = initCmd.MarkPersistentFlagRequired("config")
	RootCmd.AddCommand(initCmd)
}

func runInit(shellName string) {
	env := &platform.Shell{
		CmdFlags: &platform.Flags{
			Shell:  shellName,
			Config: config,
			Strict: strict,
			Manual: manual,
		},
	}
	env.Init()
	defer env.Close()

	cfg := engine.LoadConfig(env)

	shell.Transient = cfg.TransientPrompt != nil
	shell.ErrorLine = cfg.ErrorLine != nil || cfg.ValidLine != nil
	shell.Tooltips = len(cfg.Tooltips) > 0
	shell.ShellIntegration = cfg.ShellIntegration
	shell.PromptMark = shellName == shell.FISH && cfg.ITermFeatures != nil && cfg.ITermFeatures.Contains(ansi.PromptMark)

	for i, block := range cfg.Blocks {
		// only fetch cursor position when relevant
		if !cfg.DisableCursorPositioning && (i == 0 && block.Newline) {
			shell.CursorPositioning = true
		}
		if block.Type == engine.RPrompt {
			shell.RPrompt = true
		}
	}

	// allow overriding the upgrade notice from the config
	if cfg.DisableNotice {
		env.Cache().Set(upgrade.CACHEKEY, "disabled", -1)
	}

	if printOutput {
		init := shell.PrintInit(env)
		fmt.Print(init)
		return
	}

	init := shell.Init(env)
	fmt.Print(init)
}