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webui.nu
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use ./nulib/nagoya/fgq.nu
use ./nulib/nutils/html.nu
use ./nulib/webserver format_http
use ./nulib/webserver http_redirect
use ./nulib/webserver start_webserver
const JSON = "application/json;charset=UTF-8"
const HTML = "text/html;charset=UTF-8"
const HTML_HEAD = '
<!DOCTYPE HTML><html><head>
<style>
html {background-color:wheat;}
pre {background-color:lightgray;border-radius:15px;padding:15px;white-space:pre-wrap;}
span.label {padding:5px;border-radius:5px;margin-left:2px;}
table.issues td {border-top:1px solid black;padding:7px;}
div.reactions>span {background-color:gray;border-radius:2px;padding:2px;margin-left:2px;color:white;}
div.comment {border:1px solid black;border-radius:15px;padding:15px;margin:5px;}
issue_title {word-wrap:anywhere;}
</style>
<title>GitHub-repo-backuper viewer</title>
</head><body>
'
const HTML_TAIL = '</body></html>'
def main [
--port: int = 8080
--with-download-ui
--download-que-check-rate: duration = 15min
] {
let download_q = (if $with_download_ui { fgq create } else { null })
if $with_download_ui {
0 | tee {||
while ($download_q | path exists) {
let next = (fgq pop $download_q)
if $next != null {
for attempt in 1..5 {
try {
^python3 ./github-repo-backuper.py ...$next
break
}
print $'Download failed.. retrying in 1min.. [attempt ($attempt) / 5]'
sleep 1min
}
} else { sleep $download_que_check_rate }
}
} | null
}
start_webserver $port {|req|
if $req.path == "/" {return (http_redirect "/index.html")}
if ($with_download_ui) and ($req.path == '/github/_init_download') {return (generate_init_download $req $download_q)}
if $req.path == "/github" {return (generate_landingpage $with_download_ui)}
if $req.path =~ "^/github/[^/]+$" {return (generate_userpage $req)}
if $req.path =~ "^/github/[^/]+/[^/]+$" {return (generate_repopage $req)}
if $req.path =~ "^/github/[^/]+/[^/]+/issues$" {return (generate_issue_list $req)}
if $req.path =~ '^/github/[^/]+/[^/]+/issues/\d+$' {return (generate_issue_details $req)}
if $req.path =~ "^/github/[^/]+/[^/]+/releases$" {return (generate_release_list_page $req)}
# this does currently not work, since `nc` (webui.nu) restarts to slow and thus causes git to fail with a `Failed to connect to SERVER`
if $req.path =~ '^/github/[^/]+/[^/]+/clone/.*$' {return (git_clone $req)}
format_http 404 $HTML ([$HTML_HEAD '<h1>Page not found</h1><a href="/github">Go Home</a>' $HTML_TAIL] | str join '')
}
if $with_download_ui {
fgq delete $download_q
}
}
def generate_init_download [request, download_q]: nothing -> string {
let valid = (
("repo_owner" in $request.params)
and ($request.params.repo_owner =~ '^[^ \t]+$')
and ("repo_name" in $request.params)
and ($request.params.repo_name =~ '^[^ \t]+$')
)
if $valid {
fgq push $download_q ([
$request.params.repo_owner
$request.params.repo_name
(if $request.params.compress? == "true" { "--gzip" })
(if $request.params.wiki? == "true" { "--include-wiki" })
(if $request.params.releases? == "true" { "--include-releases" })
(if $request.params.detailed_prs? == "true" { "--detailed-prs" })
(if $request.params.lfs? == "true" { "--include-lfs" })
(if $request.params.prune? == "true" { "--prune" })
] | where $it != null)
}
format_http (if "repo_owner" in $request.params and not $valid { 400 } else { 200 }) $HTML ([
$HTML_HEAD
'<a href="/github">Back</a>'
(if "repo_owner" in $request.params { if $valid { '<p>Added repo to que.</p>' } else { '<p>Your last start-requst was invalid.</p>' } } else { '' })
'<h1>Initialize new Download</h1>'
'<form>'
'<label for="repo_owner">Repo Owner:</label><br><input type="text" id="repo_owner" name="repo_owner"><br>'
'<label for="repo_name">Repo Name:</label><br><input type="text" id="repo_name" name="repo_name"><br>'
'<input type="checkbox" id="compress" name="compress" value="true" checked><label for="compress">Compress</label><br>'
'<input type="checkbox" id="wiki" name="wiki" value="true" checked><label for="wiki">Include Wiki</label><br>'
'<input type="checkbox" id="releases" name="releases" value="true" checked><label for="releases">Include Releases</label><br>'
'<input type="checkbox" id="prune" name="prune" value="true"><label for="prune">Prune</label><br>'
'<input type="checkbox" id="detailed_prs" name="detailed_prs" value="true" checked><label for="detailed_prs">Detailed PRs</label><br>'
'<input type="checkbox" id="lfs" name="lfs" value="true"><label for="lfs">Include LFS</label><br>'
'<input type="submit" value="Submit">'
'</form>'
$HTML_TAIL
] | str join '')
}
def generate_landingpage [download_ui_enabled: bool]: nothing -> string {
if (not ($'github' | path exists)) {return (format_http 404 $HTML "Nothing found. no users, no repos, nothing.")}
format_http 200 $HTML ([
$HTML_HEAD
"<h1>GitHub repo backuper results</h1>"
(if $download_ui_enabled { '<a href="/github/_init_download">Initialize a new download</a>' } else { '' })
"<h2>Users and Orgs</h2><ul>"
((ls github/).name | sort | each {|i| $'<li><a href="/(html escape $i)">(html escape $i)</a></li>'} | str join '')
"</ul>"
$HTML_TAIL
] | str join "")
}
def generate_userpage [req]: nothing -> string {
let user = ($req.path | parse "/github/{user}").0.user
if $user !~ "^[a-zA-Z0-9_-]+$" {return (format_http 300 $HTML "Invalid user name")}
if (not ($'github/($user)' | path exists)) {return (format_http 404 $HTML "User not found")}
format_http 200 $HTML ([
$HTML_HEAD
$'<h1>/<a href="/github">github</a>/(html escape $user)</h1>'
'<h2>Repos</h2><ul>'
((ls $"github/($user)").name | sort | each {|i| $'<li><a href="/(html escape $i)">(html escape $i)</a></li>'} | str join '')
'</ul>'
$HTML_TAIL
] | str join '')
}
def generate_repopage [req]: nothing -> string {
let rp = ($req.path | parse "/github/{user}/{repo}").0
if $rp.user !~ "^[a-zA-Z0-9_-]+$" {return (format_http 300 $HTML "Invalid user name")}
if $rp.repo in ["..", "."] {return (format_http 300 $HTML "Invalid repo name")} # "/" is already filter by mapper
if (not ($'github/($rp.user)/($rp.repo)/git' | path exists)) {return (format_http 404 $HTML "Repo not found")}
cd $'github/($rp.user)/($rp.repo)/git'
let files = (^git ls-tree --name-only -r HEAD | lines) # " <-- quote fixes treesitter for line below (dont ask me)
let readme_name = ($files | where ($it | str starts-with 'README')).0?
format_http 200 $HTML ([
$HTML_HEAD
$'<h1>/<a href="/github">github</a>/<a href="/github/(html escape $rp.user)">(html escape $rp.user)</a>/(html escape $rp.repo)</h1>'
(if ("../issues" | path exists) {$'<a href="(html escape $req.path)/issues">Issues</a> '})
(if ("../releases" | path exists) {$'<a href="(html escape $req.path)/releases">Releases</a> '})
(if $readme_name != null {$'<h2>(html escape $readme_name)</h2><details><summary>toggle</summary><pre>(html escape (^git show -q $"HEAD:($readme_name)"))</pre></details>'} else {""})
$'<h2>Files</h2><details><summary>toggle</summary><ul>'
($files | each {|i| $'<li>(html escape $i)</li>'} | str join '') # TODO: replace with line below once file-viewer (incl images?) is implemented
#($files | each {|i| $'<li><a href="(html escape $req.path)/files/(html escape $i)">(html escape $i)</a></li>'} | str join '')
'</ul></details>'
# TODO: releae list
$HTML_TAIL
] | str join '')
}
def generate_issue_list [req]: nothing -> string {
let rp = ($req.path | parse "/github/{user}/{repo}/issues").0
if $rp.user !~ "^[a-zA-Z0-9_-]+$" {return (format_http 300 $HTML "Invalid user name")}
if $rp.repo in ["..", "."] {return (format_http 300 $HTML "Invalid repo name")} # "/" is already filter by mapper
if (not ($'github/($rp.user)/($rp.repo)/issues' | path exists)) {return (format_http 404 "text/plain;charset=utf-8" $"dir not found: github/($rp.user)/($rp.repo)/issues")}
cd $'github/($rp.user)/($rp.repo)/issues'
format_http 200 $HTML ([
$HTML_HEAD
$'<h1>/<a href="/github">github</a>/<a href="/github/(html escape $rp.user)">(html escape $rp.user)</a>/<a href="/github/(html escape $rp.user)/(html escape $rp.repo)">(html escape $rp.repo)</a>/issues</h1>'
'<table class="issues"><tr><th>Id</th><th></th><th></th><th>Name</th><th>Author</th><th></th></tr>'
((ls).name | sort --natural | each {|filename|
let data = (if ($filename | str ends-with ".json.gz") {^gunzip -kc $filename | from json} else if ($filename | str ends-with ".json") {open $filename} else {null})
let issue_id = ($filename | split row "." | get 0)
if $data == null {""} else {[
$'<tr><td><a href="(html escape $req.path)/(html escape $issue_id)">(html escape $issue_id)</a></td>'
$'<td>(if $data.is_pull_request? == true {"📥"} else {"📌"})</td>'
$'<td>(if $data.state? == "closed" {"🟣"} else {"🟢"})</td>'
$'<td class="issue_title">(html escape ($data.title? | default "<no title>"))'
($data.labels? | default [] | each {|label|
if ($label | describe) == "string" {
$'<span class="label" style="background-color:#00ff00">(html escape $label)</span>'
} else {
let fc = (if (isDarkColor ($label.color? | default '0a0')) {"fff"} else {"000"})
$'<span class="label" style="background-color:#(html escape ($label.color? | default '0a0')); color:#($fc)">(html escape ($label.name? | default ""))</span>'
}
} | str join '')
'</td>'
$'<td>(html escape ($data.user? | default "<no author>"))</td>'
$'<td>💬($data.comments? | default [] | length)</td></tr>'
] | str join ''}
} | str join "")
'</table>'
$HTML_TAIL
] | str join "")
}
def generate_issue_details [req]: nothing -> string {
let rp = ($req.path | parse "/github/{user}/{repo}/issues/{issue}").0
if $rp.user !~ "^[a-zA-Z0-9_-]+$" {return (format_http 300 $HTML "Invalid user name")}
if $rp.repo in ["..", "."] {return (format_http 300 $HTML "Invalid repo name")} # "/" is already filter by mapper
if $rp.issue !~ '^\d+$' {return (format_http 300 $HTML "Invalid issue id (not a number)")}
let issue_file = (if ($'github/($rp.user)/($rp.repo)/issues/($rp.issue).json' | path exists) {$'github/($rp.user)/($rp.repo)/issues/($rp.issue).json'} else {$'github/($rp.user)/($rp.repo)/issues/($rp.issue).json.gz'})
if (not ($issue_file | path exists)) {return (format_http 404 "text/plain;charset=utf-8" $"Unknown issue")}
let data = (if ($issue_file | str ends-with ".json.gz") {^gunzip -kc $issue_file | from json} else if ($issue_file | str ends-with ".json") {open $issue_file} else {null})
format_http 200 $HTML ([
$HTML_HEAD
$'<h1>/<a href="/github">github</a>/<a href="/github/(html escape $rp.user)">(html escape $rp.user)</a>/<a href="/github/(html escape $rp.user)/(html escape $rp.repo)">(html escape $rp.repo)</a>/<a href="/github/(html escape $rp.user)/(html escape $rp.repo)/issues">issues</a>/($rp.issue)</h1>'
$'<h2>(html escape ($data.title? | default "<no name>"))</h2>'
($data.labels? | default [] | each {|label|
if ($label | describe) == "string" {
$'<span class="label" style="background-color:#00ff00">(html escape $label)</span>'
} else {
let fc = (if (isDarkColor ($label.color? | default '0a0')) {"fff"} else {"000"})
$'<span class="label" style="background-color:#(html escape ($label.color? | default '0a0')); color:#($fc)">(html escape ($label.name? | default ""))</span>'
}
} | str join '')
$'<p>Author: (format_username $data.user? $data.author_association?)</p>'
(if $data.draft? == true {"<p>This is a draft</p>"} else {""})
(if $data.locked? == true {"<p>This is locked</p>"} else {""})
(if $data.state? != null {$"<p>State: (html escape $data.state)</p>"})
(if ($data.assignees? | default []) != [] {$'<p>Assignees: (html escape ($data.assignees? | default [] | get login | str join ", "))</p>'} else {""})
# MR data
# TODO: requested reviewers
(if $data.merge_commit_sha? != null {$'<p>Merge Commit SHA: (html escape $data.merge_commit_sha)</p>'} else {''})
(if $data.head? != null {$'<p>FROM <code>(html escape ($data.head.gh_repo? | default "<unknown repo>")):(html escape ($data.head.ref? | default "<unknown ref>"))</code> TO <code>(html escape ($data.base? | default "<unknown target branch>"))</code></p>'})
(if $data.merged? == true {$'<p>Merged at (html escape ($data.merged_at? | default "<unknown>")) by (html escape ($data.merged_by? | default "<unknown>"))</p>'})
$'<pre>(html escape ($data.body? | default "<no body>"))</pre>'
$'created: (html escape ($data.created_at? | default "<unknown>")) updated: (html escape ($data.updated_at? | default "<unknown>"))'
(format_reactions $data.reactions?)
'<div class="issue-comments">'
($data.comments? | default [] | each {|comment|
[
'<div class="comment">'
$'<b>(format_username $comment.user? $comment.author_association?)</b>'
$'<pre>(html escape ($comment.body? | default "<no body>"))</pre>'
$'created: (html escape ($comment.created_at? | default "<unknown>")) updated: (html escape ($comment.updated_at? | default "<unknown>"))'
(format_reactions $comment.reactions?)
'</div>'
] | str join ''
} | str join '')
'</div>'
$HTML_TAIL
] | str join "")
}
def generate_release_list_page [req]: nothing -> string {
let rp = ($req.path | parse "/github/{user}/{repo}/releases").0
if $rp.user !~ "^[a-zA-Z0-9_-]+$" {return (format_http 300 $HTML "Invalid user name")}
if $rp.repo in ["..", "."] {return (format_http 300 $HTML "Invalid repo name")} # "/" is already filter by mapper
if (not ($"github/($rp.user)/($rp.repo)/releases" | path exists)) {return (format_http 404 "text/plain;charset=utf-8" $"Repo has no releases or does not exist")}
cd $'github/($rp.user)/($rp.repo)/releases'
format_http 200 $HTML ([
$HTML_HEAD
$'<h1>/<a href="/github">github</a>/<a href="/github/(html escape $rp.user)">(html escape $rp.user)</a>/<a href="/github/(html escape $rp.user)/(html escape $rp.repo)">(html escape $rp.repo)</a>/releases</h1>'
'<ul>'
((ls --short-names).name | each {|release_id|
let details_file = (if ($'($release_id)/release.json' | path exists) {$'($release_id)/release.json'} else {$'($release_id)/release.json.gz'})
let data = (if ($details_file | str ends-with ".json.gz") {^gunzip -kc $details_file | from json} else if ($details_file | str ends-with ".json") {open $details_file} else {null})
[
$'<li><a href="(html escape $req.path)/($release_id)">'
(if $data.is_draft {html escape '<DRAFT>'} else {''})
(if $data.is_prerelease {html escape '<PRERELEASE>'} else {''})
(html escape $data.name)
'</a></li>'
] | str join ''
} | str join '')
'</ul>'
$HTML_TAIL
] | str join '')
}
def git_clone [req]: nothing -> string {
let rp = ($req.path | parse "/github/{user}/{repo}/clone/{path}").0
if $rp.user !~ "^[a-zA-Z0-9_-]+$" {return (format_http 300 $HTML "Invalid user name")}
if $rp.repo in ["..", "."] {return (format_http 300 $HTML "Invalid repo name")} # "/" is already filter by mapper
if '..' in $rp.path {return (format_http 300 $HTML "<html><h1>Security error</h1><p>Repo path contains <code>..</code></p></html>")}
if (not ($"github/($rp.user)/($rp.repo)/git" | path exists)) {return (format_http 404 "text/plain;charset=utf-8" $"Repo has no git-clone or does not exist")}
if (not ($"github/($rp.user)/($rp.repo)/git/($rp.path)" | path exists)) {return (format_http 404 "text/plain;charset=utf-8" $"Repo has no git-clone or does not exist")}
if $rp.path == "info/refs" { do {
cd $"github/($rp.user)/($rp.repo)/git"
^git update-server-info # make web-cloneable / update info
} }
format_http 200 'application/octet-stream' (open --raw $'github/($rp.user)/($rp.repo)/git/($rp.path)')
}
def generate_release_details_page [req]: nothing -> string {
let rp = ($req.path | parse "/github/{user}/{repo}/releases/{id}").0
if $rp.user !~ "^[a-zA-Z0-9_-]+$" {return (format_http 300 $HTML "Invalid user name")}
if $rp.repo in ["..", "."] {return (format_http 300 $HTML "Invalid repo name")} # "/" is already filter by mapper
if $rp.id !~ '^\d+$' {return (format_http 300 $HTML "Invalid release id (not a number)")}
if (not ($"github/($rp.user)/($rp.repo)/releases" | path exists)) {return (format_http 404 "text/plain;charset=utf-8" $"Repo has no releases or does not exist")}
let release_file = (if ($'github/($rp.user)/($rp.repo)/releases/($rp.id).json' | path exists) {$'github/($rp.user)/($rp.repo)/releases/($rp.id)/release.json'} else {$'github/($rp.user)/($rp.repo)/releases/($rp.id)/release.json.gz'})
if (not ($release_file | path exists)) {return (format_http 404 "text/plain;charset=utf-8" $"Unknown release")}
let data = (if ($release_file | str ends-with ".json.gz") {^gunzip -kc $release_file | from json} else if ($release_file | str ends-with ".json") {open $release_file} else {null})
format_http 200 $HTML ([
$HTML_HEAD
$'<h1>/<a href="/github">github</a>/<a href="/github/(html escape $rp.user)">(html escape $rp.user)</a>/<a href="/github/(html escape $rp.user)/(html escape $rp.repo)">(html escape $rp.repo)</a>/<a href="(html escape $rp.user)/(html escape $rp.repo)/releases">releases</a>/(html escape $rp.id)</h1>'
'<h2>'
(if $data.is_draft {html escape '<DRAFT>'} else {''})
(if $data.is_prerelease {html escape '<PRERELEASE>'} else {''})
(html escape $data.name)
'</h2>'
(if ("created_at" in $data) {$' created at (html escape $data.created_at)'} else {''})
(if ("published_at" in $data) {$' published at (html escape $data.published_at)'} else {''})
(if ("body" in $data) {$'<pre>(html escape $data.body)</pre>'} else {''})
(if ("reactions" in $data) {format_reactions $data.reactions} else {''})
(if ("assets" in $data) {[
'<h3>Assets</h3><table>'
($data.assets | each {|asset|
$'<tr><td>💾($asset.download_count)</td><td>(html escape $asset.name)</td></tr>'
} | str join '')
'</table>'
] | str join ''} else {})
$HTML_TAIL
] | str join '')
}
const REACTION_NAME_TO_EMOTE = {
# https://docs.github.com/en/rest/reactions/reactions
"+1": "👍"
"-1": "👎"
"laugh": "😄"
"confused": "😕"
"heart": "❤️"
"hooray": "🎉"
"rocket": "🚀"
"eyes": "👀"
}
def format_reactions [reactions] {
[
'<div class="reactions">'
($reactions
| default {}
| transpose k v
| update k {|i| $REACTION_NAME_TO_EMOTE | get $i.k? | default $i.k? | default "?"}
| each {|i| $'<span>(html escape $i.k) ($i.v)</span>'}
| str join ''
)
'</div>'
] | str join ''
}
def format_username [name, association]: nothing -> string {
if $association in [null, "NONE"] {return (html escape ($name | default "<no name>"))}
$'(html escape ($name | default "<no name>")) [(html escape $association)]'
}
def isDarkColor [color: string] {
# non hex -> idk -> false
if $color !~ "[0-9a-f]{3,8}" {return false;}
# remove alpha
let color = (if ($color | str length) == 4 {$color | str substring 0..2} else {$color})
let color = (if ($color | str length) == 8 {$color | str substring 0..5} else {$color})
# 3 -> 6
let color = (if ($color | str length) == 3 {let a = ($color | split chars); $"($a.0)($a.0)($a.1)($a.1)($a.2)($a.2)"} else {$color})
let color = $"($color)0000" # better than indexOutOfRange error
let r = ($color | str substring 0..1 | into int --radix 16)
let g = ($color | str substring 2..3 | into int --radix 16)
let b = ($color | str substring 4..5 | into int --radix 16)
let luminance = (($r * 0.299 + $g * 0.587 + $b * 0.114) / 256)
return ($luminance < 0.5)
}