From 34fe5f12af224bc7455b3a00276e0575141cd111 Mon Sep 17 00:00:00 2001
From: Hsieh Chin Fan <pham@topo.tw>
Date: Sat, 1 Apr 2023 18:16:56 +0800
Subject: Use coproc to print progress indicator

Down side: steam mode doesn't work
---
 bin/gpt/gpt | 21 +++++++++++++++++----
 1 file changed, 17 insertions(+), 4 deletions(-)

diff --git a/bin/gpt/gpt b/bin/gpt/gpt
index aa770bb..374a707 100755
--- a/bin/gpt/gpt
+++ b/bin/gpt/gpt
@@ -333,11 +333,24 @@ EOF
   # Append request body into cache
   echo "$body" >>"$cache"
 
-  # Use Yellow color to print completion from GPT
-  echo -en '\e[33m'
-  _API_call | _process_completion
-  echo -e '\e[0m\n'
+  # Run API call in coprocess
+  coproc API {
+    _API_call | _process_completion
+  }
 
+  # While API call does not end, print indicator onto terminal
+  while ps ${API_PID} &>/dev/null; do
+    printf '.'
+    sleep 1
+  done &
+
+  # Read response of API call from coprocess
+  response=$( cat <&"${API[0]}" )
+
+  # Use Yellow color to print response
+  echo -e "\r\e[K\e[33m$response\e[0m\n"
+
+  # Print how many tokens used (if VERBOSE is set)
   if [ "$VERBOSE" = true ]; then
     tokens=$(jq -s '.[-1].usage? // empty | .total_tokens' "$cache")
     echo -e "$tokens token used.\n"
-- 
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