generate-podspecs.sh

#!/bin/bash

# Exit if any command fails
set -e

function warn_missing_tag_commit() {
    RED="\033[0;31m"
    NO_COLOR="\033[0m"
    PODSPEC_HAS_TAG_OR_COMMIT=$(jq '.source | has("tag") or has("commit")' "$DEST/$pod.podspec.json")
    # If the source points to an HTTP endpoint and SHA, we consider it versioned
    PODSPEC_HAS_HTTP_AND_SHA=$(jq '.source | has("http") and (has("sha256") or has("sha1"))' "$DEST/$pod.podspec.json")

    if [[ $PODSPEC_HAS_TAG_OR_COMMIT == "false" && $PODSPEC_HAS_HTTP_AND_SHA == "false" ]]; then
        printf "${RED}WARNING! $pod.podspec doesn't have a 'tag' or 'commit' field, or doesn't point to a SHA verified file. Either modify this script to add a patch during the podspec generation or modify the original $pod.podspec in the source repo.${NO_COLOR}\n"
        exit 1
    fi
}

function add_codegen_warning_to_podspec() {
    jq '. + {"__WARNING!__": "This file is autogenerated by generate-podspecs.sh script. Do not modify manually. Re-run the script if necessary."}' "$DEST/$pod.podspec.json" > "$TMP_SPEC"
}

# Change to the expected directory.
pushd "$( dirname "$0" )" > /dev/null
popd > /dev/null
WD=$(pwd)
echo "Working directory: $WD"

# Check for CocoaPods and jq
command -v pod > /dev/null || ( echo Cocoapods is required to generate podspecs; exit 1 )
command -v jq > /dev/null || ( echo jq is required to generate podspecs; exit 1 )

read -r -p "If your node_modules folder isn't up-to-date please run 'npm install' first and re-run the script. Is your node_modules folder up-to-date? [y/N] " PROMPT_RESPONSE
if [[ $PROMPT_RESPONSE != "y" ]]; then
    echo "Please run npm install first and re-run the script."
    exit 1
fi

read -r -p "Enter the commit hash of previous commit. If this is the first-time running this script, enter 0, then commit generated files and re-rerun the script and this time use the previous commit hash: " COMMIT_HASH
if [[ -z "$COMMIT_HASH" ]]; then
    echo "Commit hash cannot be empty."
    exit 1
fi

DEST="${WD}/third-party-podspecs"
read -r -p "Please delete '$DEST' folder manually before continuing. This script will re-generate it. Did you delete it? [y/N] " PROMPT_RESPONSE_2
if [[ $PROMPT_RESPONSE_2 != "y" ]]; then
    echo "Aborting."
    exit 1
fi

mkdir "$DEST"

NODE_MODULES_DIR="gutenberg/node_modules"

# Generate the external (non-RN podspecs)
EXTERNAL_PODSPECS=$(find "$NODE_MODULES_DIR/@react-native-community/blur" \
                         "$NODE_MODULES_DIR/@react-native-masked-view/masked-view" \
                         "$NODE_MODULES_DIR/@react-native-community/slider" \
                         "$NODE_MODULES_DIR/@react-native-clipboard/clipboard" \
                         "$NODE_MODULES_DIR/react-native-gesture-handler" \
                         "$NODE_MODULES_DIR/react-native-get-random-values" \
                         "$NODE_MODULES_DIR/react-native-linear-gradient" \
                         "$NODE_MODULES_DIR/react-native-reanimated" \
                         "$NODE_MODULES_DIR/react-native-safe-area" \
                         "$NODE_MODULES_DIR/react-native-safe-area-context" \
                         "$NODE_MODULES_DIR/react-native-screens" \
                         "$NODE_MODULES_DIR/react-native-svg" \
                         "$NODE_MODULES_DIR/react-native-video"\
                         "$NODE_MODULES_DIR/react-native-webview"\
                         "$NODE_MODULES_DIR/react-native-fast-image"\
                          -type f -name "*.podspec" -print)

for podspec in $EXTERNAL_PODSPECS
do
    pod=$(basename "$podspec" .podspec)

    echo "Generating podspec for $pod"
    pod ipc spec "$podspec" > "$DEST/$pod.podspec.json"

    # react-native-blur doesn't have a tag field in it's podspec
    if [[ "$pod" == "react-native-blur" ]]; then
        echo "   ==> Patching $pod podspec"
        TMP_RNBlurPodspec=$(mktemp)
        # The npm version we're using is 3.6.0 because 3.6.1 still isn't on npm https://www.npmjs.com/package/@react-native-community/blur/v/3.6.1
        # And there's no v3.6.0 tag in https://github.com/Kureev/react-native-blur so we depend on v3.6.1 in the podspec
        jq '.source.tag = "v3.6.1" | .version = "3.6.1"' "$DEST/$pod.podspec.json" > "$TMP_RNBlurPodspec"
        mv "$TMP_RNBlurPodspec" "$DEST/$pod.podspec.json"
    fi

    # Add warning to bottom
    TMP_SPEC=$(mktemp)
    add_codegen_warning_to_podspec
    mv "$TMP_SPEC" "$DEST/$pod.podspec.json"

    # As a last step check if podspec has a "tag" or "commit" field in "source"
    warn_missing_tag_commit
done

# Generate the React Native podspecs
# Change to the React Native directory to get relative paths for the RN podspecs
pushd "$NODE_MODULES_DIR/react-native" > /dev/null

SCRIPTS_PATH="./scripts/"
CODEGEN_REPO_PATH="../packages/react-native-codegen"
CODEGEN_NPM_PATH="../react-native-codegen"
PACKAGE_JSON_PATH="./package.json"
SRCS_DIR=${SRCS_DIR:-$(cd "./Libraries" && pwd)}
RN_VERSION=$(cat ./package.json | grep -m 1 version | sed 's/[^0-9.]//g')

RN_PODSPECS=$(find * -type f -name "*.podspec" -not -name "React-rncore.podspec" -not -path "third-party-podspecs/*" -not -path "*Fabric*" -print)
TMP_DEST=$(mktemp -d)

for podspec in $RN_PODSPECS
do
    pod=$(basename "$podspec" .podspec)
    path=$(dirname "$podspec")

    # The only one we need is React-jsc, all the others can be skipped.
    if [[ $pod != 'React-jsc' ]]; then
      echo "Skipping copying React Native $pod podspec..."
      continue
    fi

    echo "Generating podspec for $pod with path $path"

    pod ipc spec "$podspec" > "$TMP_DEST/$pod.podspec.json"
    # Removes message [Codegen] Found at the beginning of the file
    sed -i '' -e '/\[Codegen\] Found/d' "$TMP_DEST/$pod.podspec.json"
    cat "$TMP_DEST/$pod.podspec.json" | jq > "$DEST/$pod.podspec.json"

    # Add a "prepare_command" entry to each podspec so that 'pod install' will fetch sources from the correct directory
    # and retains the existing prepare_command if it exists
    prepare_command="TMP_DIR=\$(mktemp -d); mv * \$TMP_DIR; cp -R \"\$TMP_DIR/${path}\"/* ."
    cat "$TMP_DEST/$pod.podspec.json" | jq --arg CMD "$prepare_command" '.prepare_command = "\($CMD) && \(.prepare_command // true)"' > "$DEST/$pod.podspec.json"

    # Add warning to bottom
    TMP_SPEC=$(mktemp)
    add_codegen_warning_to_podspec
    mv "$TMP_SPEC" "$DEST/$pod.podspec.json"

    # As a last step check if podspec has a "tag" or "commit" field in "source"
    warn_missing_tag_commit
done
popd > /dev/null

# We are required to run this script twice to capture the correct target.
# 0 is the value set during the first script run to generate the podspecs.
if [[ "$COMMIT_HASH" != "0" ]]; then
    echo 'Updating XCFramework Podfile.lock with these changes'
    pushd ios-xcframework > /dev/null
    bundle exec pod update
    popd > /dev/null
fi