#!/usr/bin/env bash
set -euo pipefail

# Find and combine requirements from src/*/requirements.txt,
# filtering out lines whose *package name* starts with "cpl-".
# Works with pinned versions, extras, markers, editable installs, and VCS refs.

shopt -s nullglob

req_files=(src/*/requirements.txt)
if ((${#req_files[@]} == 0)); then
  echo "No requirements files found at src/*/requirements.txt" >&2
  exit 1
fi

tmp_combined="$(mktemp)"
trap 'rm -f "$tmp_combined"' EXIT

# Concatenate, trim comments/whitespace, filter out cpl-* packages, dedupe.
# We keep non-package options/flags/constraints as-is.
awk '
  function trim(s){ sub(/^[[:space:]]+/,"",s); sub(/[[:space:]]+$/,"",s); return s }

  {
    line=$0
    # drop full-line comments and strip inline comments
    if (line ~ /^[[:space:]]*#/) next
    sub(/#[^!].*$/,"",line)  # strip trailing comment (simple heuristic)
    line=trim(line)
    if (line == "") next

    # Determine the package *name* even for "-e", extras, pins, markers, or VCS "@"
    e = line
    sub(/^-e[[:space:]]+/,"",e)           # remove editable prefix
    # Tokenize up to the first of these separators: space, [ < > = ! ~ ; @
    token = e
    sub(/\[.*/,"",token)                  # remove extras quickly
    n = split(token, a, /[<>=!~;@[:space:]]/)
    name = tolower(a[1])

    # If the first token (name) starts with "cpl-", skip this requirement
    if (name ~ /^cpl-/) next

    print line
  }
' "${req_files[@]}" | sort -u > "$tmp_combined"

if ! [ -s "$tmp_combined" ]; then
  echo "Nothing to install after filtering out cpl-* packages." >&2
  exit 0
fi

echo "Installing dependencies (excluding cpl-*) from:"
printf '  - %s\n' "${req_files[@]}"
echo
echo "Final set to install:"
cat "$tmp_combined"
echo

# Use python -m pip for reliability; change to python3 if needed.
python -m pip install -r "$tmp_combined"