/*
Copyright © 2026 Hector Alfaro <hector@hectorsector.com>
*/
package cmd

import (
	"fmt"
	"os"

	"github.com/spf13/cobra"
	"tangled.org/hectorsector.com/books/cli/internal/apperrors"
	"tangled.org/hectorsector.com/books/cli/internal/openlibrary"
	"tangled.org/hectorsector.com/books/cli/internal/store"
)

var enrichCmd = &cobra.Command{
	Use:   "enrich",
	Short: "looks up OL IDs for each book",
	Run: func(cmd *cobra.Command, args []string) {
		storePath, _ := cmd.Root().PersistentFlags().GetString("store")

		err := runEnrich(storePath)
		if err != nil {
			fmt.Fprintf(os.Stderr, "enriching with OLWorkIDs:\n%s", apperrors.FormatError(err))
			os.Exit(1)
		}
	},
}

func runEnrich(storePath string) error {
	books, err := store.Load(storePath)
	if err != nil {
		return fmt.Errorf("loading books from store: %w", err)
	}
	fmt.Println("📂 Loaded from store.")

	for i := range books {
		fmt.Printf("Enriching: %s\n", books[i].Title)
		if books[i].OLWorkID == "" && books[i].ISBN != "" {
			books[i].OLWorkID, err = openlibrary.LookupByISBN(books[i].ISBN)
			if err != nil {
				fmt.Fprintf(os.Stderr, "warning: Couldn't resolve ISBN %s to a OLWorkID\n", books[i].ISBN)
			}
		}

		if books[i].OLWorkID == "" && books[i].Title != "" && books[i].Author != "" {
			books[i].OLWorkID, err = openlibrary.LookupByTitle(books[i].Title, books[i].Author)
			if err != nil {
				fmt.Fprintf(os.Stderr, "warning: Couldn't resolve to a OLWorkID. Searched for:\n Title: %s\n Author: %s\n", books[i].Title, books[i].Author)
			}
		}

		// couldn't match via either search
		if books[i].OLWorkID == "" {
			fmt.Fprintf(os.Stderr, "warning: Couldn't resolve to a OLWorkID. Searched for:\n ISBN: %s\n Title: %s\n Author: %s\n", books[i].ISBN, books[i].Title, books[i].Author)
		}
	}

	err = store.Save(storePath, books)
	if err != nil {
		return fmt.Errorf("saving to store: %w", err)
	}
	fmt.Println("💾 Store updated.")

	fmt.Println("👀 You can review books that couldn't be matched with:\n  books list --no-olworkid")

	return nil
}

func init() {
	rootCmd.AddCommand(enrichCmd)
}