// Copyright 2023 Michael Amann and contributors
// SPDX-License-Identifier: AGPL-3.0-only

package pmd

import (
	"strings"

	"go.kle.li/tools/go-meta/internal/utils"
	"go.kle.li/tools/go-meta/shared"
)

type packageMetadata struct {
	imd  *shared.PackageMetadataInput
	meta *shared.PackageMetadata
}

func NewPackageMetadata(imd *shared.PackageMetadataInput) *shared.PackageMetadata {
	imdc := &shared.PackageMetadataInput{
		IsTag:         imd.IsTag,
		Branch:        strings.TrimSpace(imd.Branch),
		DefaultBranch: strings.TrimSpace(imd.DefaultBranch),
		Version:       strings.TrimSpace(imd.Version),
		CommitSha:     strings.TrimSpace(imd.CommitSha),
		CommitTime:    strings.TrimSpace(imd.CommitTime),
	}

	md := packageMetadata{
		imd:  imdc,
		meta: &shared.PackageMetadata{},
	}

	md.compute()

	return md.meta
}

func (pmd *packageMetadata) compute() {
	m := shared.PackageMetadata{
		IsTag:           utils.StringToBool(pmd.imd.IsTag),
		Branch:          utils.ValOrDefault(pmd.imd.Branch, shared.NoBranch),
		DefaultBranch:   utils.ValOrDefault(pmd.imd.DefaultBranch, shared.NoDefaultBranch),
		GoCommitVersion: pmd.getGoDummyVersion(),
		Version:         utils.ValOrDefault(pmd.imd.Version, pmd.getGoDummyVersion()),
		CommitSha:       utils.ValOrDefault(pmd.imd.CommitSha, shared.NoCommit),
		CommitTime:      utils.ValOrDefault(pmd.imd.CommitTime, shared.NoTime),
	}

	pmd.meta = &m
}

func (p *packageMetadata) getGoDummyVersion() string {
	if utils.StringIsSet(p.imd.CommitSha) && utils.StringIsSet(p.imd.CommitTime) {
		ok, slug := utils.StringSlug(p.imd.CommitSha, 12)
		if ok {
			return "v0.0.0-" + p.imd.CommitTime + "-" + slug
		}
		return shared.NoVersion
	}
	return shared.NoVersion
}