package lockfile

import (
	"fmt"
	"os"

	"git.badhouseplants.net/allanger/shoebill/pkg/repository"
	"github.com/sirupsen/logrus"
	"gopkg.in/yaml.v2"
)

const LOCKFILE_NAME = "shoebill.lock.yaml"

type LockEntry struct {
	Chart     string
	Release   string
	Version   string
	Namespace string
	RepoUrl   string
	RepoName  string
	GitCommit string
	Values    map[string]string
	Secrets   map[string]string
}

type HashPerRelease struct {
	Release    string
	Namespace  string
	CommitHash string
}
type HashesPerReleases []*HashPerRelease

type LockRepository struct {
	URL  string
	Name string
}

type LockFile []*LockEntry

// Init the LockFile object by reading the yaml file
func NewFromFile(lockfileDirPath string) (LockFile, error) {
	var lockEntries LockFile
	lockfilePath := fmt.Sprintf("%s/%s", lockfileDirPath, LOCKFILE_NAME)

	logrus.Infof("reading the lockfile file: %s", lockfilePath)

	lockFileData, err := os.ReadFile(lockfilePath)
	if err != nil {
		return nil, err
	}

	if err := yaml.Unmarshal(lockFileData, &lockEntries); err != nil {
		return nil, err
	}

	return lockEntries, nil
}

func (lockfile LockFile) ReposFromLockfile() (repository.Repositories, error) {
	repositories := repository.Repositories{}
	for _, lockentry := range lockfile {
		newRepoEntry := &repository.Repository{
			URL:  lockentry.RepoUrl,
			Name: lockentry.RepoName,
		}
		repositories = append(repositories, newRepoEntry)
	}

	// Lockfile contains an entry per a release, so one repo might be met several times
	allKeys := make(map[string]bool)
	dedupedRepositories := repository.Repositories{}

	for _, repo := range repositories {
		if _, value := allKeys[repo.Name]; !value {
			allKeys[repo.Name] = true
			dedupedRepositories = append(dedupedRepositories, repo)
		}
	}

	for _, repoEntry := range dedupedRepositories {
		if err := repoEntry.KindFromUrl(); err != nil {
			return nil, err
		}
	}
	return dedupedRepositories, nil
}

func (lf LockFile) AddHashes(hashes HashesPerReleases) {
	for _, lockEntry := range lf {
		for _, hash := range hashes {
			if lockEntry.Namespace == hash.Namespace && lockEntry.Release == hash.Release {
				lockEntry.GitCommit = hash.CommitHash
			}
		}
	}
}

func (lf LockFile) WriteToFile(dir string) error {
	lockfilePath := fmt.Sprintf("%s/%s", dir, LOCKFILE_NAME)
	lockfileContent, err := yaml.Marshal(lf)
	if err != nil {
		return err
	}
	if err := os.WriteFile(lockfilePath, lockfileContent, os.ModeExclusive); err != nil {
		return nil
	}
	return nil
}