package cmd

import (
	"fmt"

	"github.com/jasonross/text-shark/internal/fileops"
	"github.com/jasonross/text-shark/internal/runner"
	"github.com/spf13/cobra"
)

var (
	deleteLineDryRun bool
	deleteLineType   string
	deleteLineGlob   string
	deleteLineRegex  bool
)

var deleteLineCmd = &cobra.Command{
	Use:   "delete-line <pattern> [path]",
	Short: "Delete all lines matching <pattern> from files",
	Args:  cobra.RangeArgs(1, 2),
	RunE: func(cmd *cobra.Command, args []string) error {
		pattern := args[0]
		path := "."
		if len(args) == 2 {
			path = args[1]
		}

		var rgExtra []string
		if deleteLineType != "" {
			rgExtra = append(rgExtra, "--type", deleteLineType)
		}
		if deleteLineGlob != "" {
			rgExtra = append(rgExtra, "--glob", deleteLineGlob)
		}

		files, err := runner.RgListFiles(pattern, path, rgExtra...)
		if err != nil {
			return err
		}
		if len(files) == 0 {
			fmt.Println("No matches found.")
			return nil
		}

		var results []fileops.DeleteResult
		for _, f := range files {
			var res fileops.DeleteResult
			if deleteLineRegex {
				res, err = fileops.DeleteLinesInFileRegex(f, pattern, deleteLineDryRun)
			} else {
				res, err = fileops.DeleteLinesInFile(f, pattern, deleteLineDryRun)
			}
			if err != nil {
				return fmt.Errorf("%s: %w", f, err)
			}
			results = append(results, res)
		}

		if deleteLineDryRun {
			fmt.Println("[dry-run] would modify:")
		}
		fileops.PrintDeleteResults(results)
		return nil
	},
}

func init() {
	deleteLineCmd.Flags().BoolVar(&deleteLineDryRun, "dry-run", false, "Print what would change without writing")
	deleteLineCmd.Flags().StringVarP(&deleteLineType, "type", "t", "", "File type filter (e.g. go, py)")
	deleteLineCmd.Flags().StringVarP(&deleteLineGlob, "glob", "g", "", "Glob pattern for file paths")
	deleteLineCmd.Flags().BoolVarP(&deleteLineRegex, "regex", "r", false, "Treat pattern as a regular expression")
}