#!/bin/bash

function debug() {
    echo "::debug file=${BASH_SOURCE[0]},line=${BASH_LINENO[0]}::$1"
}

function warning() {
    echo "::warning file=${BASH_SOURCE[0]},line=${BASH_LINENO[0]}::$1"
}

function error() {
    echo "::error file=${BASH_SOURCE[0]},line=${BASH_LINENO[0]}::$1"
}

function add_mask() {
    echo "::add-mask::$1"
}

if [ -z "$GITHUB_ACTOR" ]; then
    error "GITHUB_ACTOR environment variable is not set"
    exit 1
fi

if [ -z "$GITHUB_REPOSITORY" ]; then
    error "GITHUB_REPOSITORY environment variable is not set"
    exit 1
fi

if [ -z "$GH_PERSONAL_ACCESS_TOKEN" ]; then
    error "GH_PERSONAL_ACCESS_TOKEN environment variable is not set"
    exit 1
fi

if [ -z "$WIKI_PATH" ]; then
    echo "WIKI_PATH environment variable is not set"
    exit 1
fi

add_mask "${GH_PERSONAL_ACCESS_TOKEN}"

if [ -z "${WIKI_COMMIT_MESSAGE:-}" ]; then
    debug "WIKI_COMMIT_MESSAGE not set, using default"
    WIKI_COMMIT_MESSAGE='Automatically publish wiki'
fi

GIT_REPOSITORY_URL="https://${GH_PERSONAL_ACCESS_TOKEN}@github.com/$GITHUB_REPOSITORY.wiki.git"

debug "Checking out wiki repository"
tmp_dir=$(mktemp -d -t ci-XXXXXXXXXX)
(
    cd "$tmp_dir" || exit 1
    git init
    git config user.name "$GITHUB_ACTOR"
    git config user.email "$GITHUB_ACTOR@users.noreply.github.com"
    git pull "$GIT_REPOSITORY_URL"
)

debug "Rsync contents of $WIKI_PATH"
rsync -q -a --delete --exclude=.git "$GITHUB_WORKSPACE/$WIKI_PATH/" "$tmp_dir"

if [ ! -r "$tmp_dir/Home.md" ]; then
    debug "Copy README.md to wiki/Home.md"
    rsync -q -a "$GITHUB_WORKSPACE/README.md" "$tmp_dir/Home.md"
fi

debug "Rewriting images path to absolute"
(
    cd "$tmp_dir" || exit 1
    find . -type f -exec sed -Ei 's@([ (])([^( ]+)(\/wiki_static\/.+?\.(png|jpe?g|svg)[ \)])@\1https://github.com/Flipper-Zero/flipperzero-firmware-community/raw/master\3@' {} \;
)

debug "Committing and pushing changes"
(
    cd "$tmp_dir" || exit 1
    git add .
    git commit -m "$WIKI_COMMIT_MESSAGE"
    git push --set-upstream "$GIT_REPOSITORY_URL" master
)

rm -rf "$tmp_dir"
exit 0