#!/bin/env tclsh
# A rough copy of <https://github.com/bluesky-social/feed-generator/blob/main/scripts/publishFeedGen.ts>

package require json
package require json::write
package require http
package require tls

::http::register https 443 ::tls::socket

cd [file dirname [file dirname [dict get [info frame [info frame]] file]]]

source lib/prompt.tcl
source lib/atpagent.tcl

input "Enter your bsky handle:" conf(handle)
paswd "Enter your Bluesky password (preferably an App Password):" conf(password)
input "Optionally, enter a custom PDS service to sign in with:" conf(service) https://bsky.social
input "Enter the host where the feed is available:" conf(feedHost)
input "Enter a short name or the record. This will be shown in the feed's URL:" conf(recordName)
input "Enter a display name for your feed:" conf(displayName)
inopt "Optionally, enter a brief description of your feed:" conf(description)
inopt "Optionally, enter a local path to an avatar that will be used for the feed:" conf(avatar)

atpagent agent $conf(service)

agent login $conf(handle) $conf(password)

if {$conf(description) == ""} {
  set description null
} else {
  set description [::json::write string $conf(description)]
}

set avatarRef {}
if {$conf(avatar) != {}} {
  switch -glob -- $conf(avatar) {
    *.png {
      set mime image/png
    }
    *.{jpg,jpeg} {
      set mime image/jpeg
    }
    default {
      return -code error "expected png or jpeg avatar"
    }
  }

  set fd [open $conf(avatar) r]
  fconfigure $fd -translation binary
  set avatar [read $fd]
  close $fd
  unset fd

  lassign [agent xrpc com.atproto.repo.uploadBlob -type $mime $avatar] av_ncode av_data
  puts "upload: $av_data"
  if {$av_ncode != 200} { return -code error "got $av_ncode uploading avatar!\n$av_data" }

  # this sucks.
  set blob [::json::write object \
    {$type} {"blob"} \
    mimeType [::json::write string [dict get $av_data blob mimeType]] \
    size [dict get $av_data blob size] \
    ref [::json::write object \
      {$link} [::json::write string [dict get $av_data blob ref {$link}]]]]

  set avatarRef [list avatar $blob]

  puts $avatarRef
}

lassign [agent xrpc com.atproto.repo.putRecord \
  repo [::json::write string [agent state did]] \
  collection {"app.bsky.feed.generator"} \
  rkey [::json::write string $conf(recordName)] \
  record [::json::write object \
    did [::json::write string did:web:$conf(feedHost)] \
    displayName [::json::write string $conf(displayName)] \
    description $description \
    createdAt [::json::write string [clock format [clock seconds] -format "%Y-%m-%dT%T.000Z"]] \
    {*}$avatarRef]] pr_ncode pr_data

if {$pr_ncode != 200} { return -code error "got $pr_ncode putting feed record!\n$pr_data" }

puts "All done 🎉"