package main

import (
	"encoding/json"

	"src.opensuse.org/autogits/common"
)

//go:generate mockgen -source=maintainership.go -destination=mock/maintainership.go -typed

type MaintainershipData interface {
	ListProjectMaintainers() []string
	ListPackageMaintainers(pkg string) []string
}

const ProjectKey = ""

type MaintainershipMap map[string][]string

func parseMaintainershipData(data []byte) (*MaintainershipMap, error) {
	maintainers := make(MaintainershipMap)
	if err := json.Unmarshal(data, &maintainers); err != nil {
		return nil, err
	}

	return &maintainers, nil
}

func FetchProjectMaintainershipData(gitea common.GiteaMaintainershipInterface, org, prjGit, branch string) (*MaintainershipMap, error) {
	data, err := gitea.FetchMaintainershipFile(org, prjGit, branch)
	if err != nil || data == nil {
		return nil, err
	}

	return parseMaintainershipData(data)
}

func (data *MaintainershipMap) ListProjectMaintainers() []string {
	if data == nil {
		return nil
	}

	m, found := (*data)[ProjectKey]
	if !found {
		return nil
	}

	return m
}

func (data *MaintainershipMap) ListPackageMaintainers(pkg string) []string {
	if data == nil {
		return nil
	}

	pkgMaintainers := (*data)[pkg]
	prjMaintainers := data.ListProjectMaintainers()

prjMaintainer:
	for _, prjm := range prjMaintainers {
		for i := range pkgMaintainers {
			if pkgMaintainers[i] == prjm {
				continue prjMaintainer
			}
		}
		pkgMaintainers = append(pkgMaintainers, prjm)
	}

	return pkgMaintainers
}