package app

import (
	"time"

	"gitea.maximumdirect.net/eric/distributor/internal/bundle"
	"gitea.maximumdirect.net/eric/distributor/internal/storage"
)

type bundleSummaryResult struct {
	Path string `json:"path"`
	ID   string `json:"id"`
}

type bundleDetailResult struct {
	Path      string               `json:"path"`
	ID        string               `json:"id"`
	Created   string               `json:"created"`
	Digest    string               `json:"digest"`
	FileCount int                  `json:"file_count"`
	TotalSize int64                `json:"total_size"`
	Files     []manifestFileResult `json:"files"`
}

type manifestFileResult struct {
	Path   string `json:"path"`
	SHA256 string `json:"sha256"`
	Size   int64  `json:"size"`
}

func bundleSummaryFromBundle(sourceBundle bundle.Bundle) bundleSummaryResult {
	return bundleSummaryResult{
		Path: storage.DisplayPath(sourceBundle.RootRelativePath),
		ID:   sourceBundle.Manifest.ID,
	}
}

func bundleSummariesFromBundles(sourceBundles []bundle.Bundle) []bundleSummaryResult {
	results := make([]bundleSummaryResult, 0, len(sourceBundles))
	for _, sourceBundle := range sourceBundles {
		results = append(results, bundleSummaryFromBundle(sourceBundle))
	}
	return results
}

func bundleDetailFromBundle(sourceBundle bundle.Bundle) bundleDetailResult {
	result := bundleDetailResult{
		Path:      storage.DisplayPath(sourceBundle.RootRelativePath),
		ID:        sourceBundle.Manifest.ID,
		Created:   formatManifestCreated(sourceBundle.Manifest.Created),
		Digest:    sourceBundle.Manifest.Digest,
		FileCount: len(sourceBundle.Manifest.Files),
		Files:     manifestFileResults(sourceBundle.Manifest.Files),
	}
	for _, file := range sourceBundle.Manifest.Files {
		result.TotalSize += file.Size
	}
	return result
}

func bundleDetailsFromBundles(sourceBundles []bundle.Bundle) []bundleDetailResult {
	results := make([]bundleDetailResult, 0, len(sourceBundles))
	for _, sourceBundle := range sourceBundles {
		results = append(results, bundleDetailFromBundle(sourceBundle))
	}
	return results
}

func manifestFileResults(files []bundle.ManifestFile) []manifestFileResult {
	results := make([]manifestFileResult, 0, len(files))
	for _, file := range files {
		results = append(results, manifestFileResult{
			Path:   file.Path,
			SHA256: file.SHA256,
			Size:   file.Size,
		})
	}
	return results
}

func formatManifestCreated(created time.Time) string {
	return created.Format(time.RFC3339)
}