// Package : 
package versionOc

import (
    "fmt"
    "os"
    "errors"
    "io"
    "path/filepath"
    "gopkg.in/yaml.v2"
    log "oc-deploy/log_wrapper"
)

type versionInput struct {
    Version string  `yaml:"version"`
}

var OFFLINE_DIR string = "../offline"

func GetFromFile(fileversion string) (string, error) {
    fin, err := os.Open(fileversion)
    if err != nil {
        return "", err
    }
    defer fin.Close()

    byteValue, err := io.ReadAll(fin)
    if err != nil {
        return "", err
    }

    var objmap versionInput

    err = yaml.Unmarshal(byteValue, &objmap)
    if err != nil {
        return "", err
    }

    return objmap.Version, nil
}

// Get : Retourne la version
func Get(version string) (string, error) {

    version2 := version
    if version == "latest" {
        versionLatest, err := readLatestFile()
        if err != nil {
            return "", err
        }
        version2 = versionLatest
    }

    ficversion := fmt.Sprintf("oc_%s.yml", version2)
    src := filepath.Join(OFFLINE_DIR, ficversion)
    if _, err := os.Stat(src); err != nil {
        log.Log().Debug().Msg(err.Error())
        return "", errors.New("Version non disponible")
    }

    return version2, nil
}

// readLatestFile : Lit le numéro de la version dans le fichier lastest.yml
func readLatestFile() (string, error) {
    src := filepath.Join(OFFLINE_DIR, "latest.yml")

    fin, err := os.Open(src)

    if err != nil {
        return "", err
    }
    defer fin.Close()

    byteValue, err := io.ReadAll(fin)
    if err != nil {
        return "", err
    }

    var objmap versionInput

    err = yaml.Unmarshal(byteValue, &objmap)

    if err != nil {
        return "", err
    }

    return objmap.Version, nil
}