From 0b02655080015d9e0cac5629d503999ecf048b5e Mon Sep 17 00:00:00 2001
From: Valentin Lab <valentin.lab@kalysto.org>
Date: Tue, 8 Sep 2020 12:09:48 +0200
Subject: [PATCH] new: [apache,piwigo] added ``piwigo`` charm.

Signed-off-by: Valentin Lab <valentin.lab@kalysto.org>
---
 apache/build/Dockerfile                     |   8 +
 piwigo/hooks/init                           |  27 +++
 piwigo/hooks/mysql_database-relation-joined |  40 +++++
 piwigo/hooks/post_deploy                    | 172 ++++++++++++++++++++
 piwigo/metadata.yml                         |  27 +++
 5 files changed, 274 insertions(+)
 create mode 100755 piwigo/hooks/init
 create mode 100755 piwigo/hooks/mysql_database-relation-joined
 create mode 100755 piwigo/hooks/post_deploy
 create mode 100644 piwigo/metadata.yml

diff --git a/apache/build/Dockerfile b/apache/build/Dockerfile
index d14a6612..6a148a9e 100644
--- a/apache/build/Dockerfile
+++ b/apache/build/Dockerfile
@@ -25,6 +25,14 @@ RUN apt-get update && \
     rm -rf /var/lib/apt/lists/* && \
     docker-php-ext-install mbstring intl xml pdo_pgsql
 
+## Piwigo
+RUN apt-get update && \
+    DEBIAN_FRONTEND=noninteractive apt-get install -y libexif-dev libexif12 libfreetype6-dev libjpeg62-turbo-dev libpng-dev && \
+    apt-get clean && \
+    rm -rf /var/lib/apt/lists/* && \
+    docker-php-ext-configure gd --with-freetype-dir=/usr/include/ --with-jpeg-dir=/usr/include/ && \
+    docker-php-ext-install exif gd pdo_mysql mysqli
+
 
 ## XXXvlab: could load these in 'entrypoint.sh' to be more dynamic
 RUN a2enmod headers proxy_http rewrite ssl proxy_wstunnel http2 proxy_connect
diff --git a/piwigo/hooks/init b/piwigo/hooks/init
new file mode 100755
index 00000000..b9d2c0a6
--- /dev/null
+++ b/piwigo/hooks/init
@@ -0,0 +1,27 @@
+#!/bin/bash
+
+## Init is run on host
+## For now it is run every time the script is launched, but
+## it should be launched only once after build.
+
+## Accessible variables are:
+## - SERVICE_NAME        Name of current service
+## - DOCKER_BASE_IMAGE   Base image from which this service might be built if any
+## - SERVICE_DATASTORE           Location on host of the DATASTORE of this service
+## - SERVICE_CONFIGSTORE         Location on host of the CONFIGSTORE of this service
+
+set -e
+
+SOURCE_URL=https://piwigo.org/download/dlcounter.php?code=latest
+LOCATION="$SERVICE_DATASTORE/opt/apps/piwigo"
+
+mkdir -p "$LOCATION"
+if dir_is_empty "$LOCATION"; then
+    cd "$LOCATION"
+    wget -q "$SOURCE_URL" -O file.zip
+    unzip file.zip
+    rm file.zip
+    chown root:root "$LOCATION" -R
+    mv piwigo/* piwigo/.gitignore .
+    rmdir piwigo
+fi
diff --git a/piwigo/hooks/mysql_database-relation-joined b/piwigo/hooks/mysql_database-relation-joined
new file mode 100755
index 00000000..854d5fa5
--- /dev/null
+++ b/piwigo/hooks/mysql_database-relation-joined
@@ -0,0 +1,40 @@
+#!/bin/bash
+
+
+## XXXvlab: should get location of code
+#CONFIG=$(echo $COMPOSE_CONFIG | shyaml get-value $SERVICE_NAME.relations.publish-dir...)
+# CONFIG="$SERVICE_DATASTORE/opt/apps/piwigo/local/config/database.inc.php"
+
+set -e
+
+PASSWORD="$(relation-get password)"
+USER="$(relation-get user)"
+DBNAME="$(relation-get dbname)"
+
+# control=$(echo -en "$USER\0$DBNAME\0$PASSWORD" | md5_compat)
+
+#[ "$control" == "$(relation-get control)" ] && exit 0
+
+## creation of config file is done through install.php in post_deploy
+
+## Do not support \ and ' or \n in DBNAME, PASSWORD.
+# file_put "$CONFIG" <<EOF
+# <?php
+# \$conf['dblayer'] = 'mysqli';
+# \$conf['db_base'] = '$DBNAME';
+# \$conf['db_user'] = 'piwigo';
+# \$conf['db_password'] = '$PASSWORD';
+# \$conf['db_host'] = '$TARGET_SERVICE_NAME';
+
+# \$prefixeTable = '';
+
+# define('PWG_CHARSET', 'utf-8');
+# define('DB_CHARSET', 'utf8');
+# define('DB_COLLATE', '');
+
+# EOF
+
+# relation-set control "$control"
+
+info "Configured $SERVICE_NAME code for $TARGET_SERVICE_NAME access."
+
diff --git a/piwigo/hooks/post_deploy b/piwigo/hooks/post_deploy
new file mode 100755
index 00000000..6611a802
--- /dev/null
+++ b/piwigo/hooks/post_deploy
@@ -0,0 +1,172 @@
+#!/bin/bash
+
+##
+## Get domain in option of relation "publish-dir"
+##
+
+## XXXvlab: there is a tiny lapse of time where database is not yet
+## installed, and admin password is the default value.
+
+## XXXvlab: can't get real config here
+if ! read-0 publish_dir_ts _ _ < <(get_service_relation "$SERVICE_NAME" "publish-dir"); then
+    err "Couldn't find relation ${DARKCYAN}publish-dir${NORMAL}."
+    exit 1
+fi
+
+publish_dir_relation_dir=$(get_relation_data_dir "$SERVICE_NAME" "$publish_dir_ts" "publish-dir") || {
+    err "Failed to find relation file"
+    exit 1
+}
+
+publish_dir_relation_config=$(cat "$publish_dir_relation_dir/data") || exit 2
+
+domain=$(e "$publish_dir_relation_config" | shyaml get-value domain) || {
+    err "Couldn't get domain information in ${DARKCYAN}publish-dir${NORMAL} relation's data."
+    exit 1
+}
+
+url=$(e "$publish_dir_relation_config" | shyaml get-value url) || {
+    err "Couldn't get domain information in ${DARKCYAN}publish-dir${NORMAL} relation's data."
+    exit 1
+}
+
+
+##
+## Local charm config
+##
+
+admin_password=$(options-get admin-password 2>/dev/null ) || exit 1
+admin_email=$(options-get admin-email 2>/dev/null ) || true
+admin_email=${admin_email:-"admin@$domain"}
+
+
+
+CONTROL="$SERVICE_DATASTORE/.control"
+## Was it already properly propagated to database ?
+control=$(H "${admin_password}" "${admin_email}")
+if [ -e "$CONTROL" ] && [ "$control" == "$(cat "$CONTROL")" ]; then
+    exit 0
+fi
+
+## XXXvlab: can't get real config here
+if ! read-0 ts _ _ < <(get_service_relation "$SERVICE_NAME" "mysql-database"); then
+    err "Couldn't find relation ${DARKCYAN}mysql-database${NORMAL}."
+    exit 1
+fi
+
+
+##
+## We need mysql relation config also
+##
+
+relation_file=$(get_relation_data_file "$SERVICE_NAME" "$ts" "mysql-database") || {
+    err "Failed to find relation file"
+    exit 1
+}
+
+mysql_config=$(cat "$relation_file") || exit 2
+
+DBNAME="$(e "$mysql_config" | shyaml get-value dbname)" || {
+    err "Couldn't retrieve information of ${DARKCYAN}mysql-database${NORMAL}'s relation."
+    exit 1
+}
+
+CONFIG="$SERVICE_DATASTORE/opt/apps/piwigo/local/config/database.inc.php"
+if [ -f "$CONFIG" ]; then
+    debug "Database already configured."
+
+    export SERVICE_NAME="$ts"
+    export SERVICE_DATASTORE="$DATASTORE/$SERVICE_NAME"
+    DOCKER_BASE_IMAGE=$(service_base_docker_image "$SERVICE_NAME")
+    export DOCKER_BASE_IMAGE
+
+    target_charm=$(get_service_charm "$ts") || exit 1
+    target_charm_path=$(charm.get_dir "$target_charm") || exit 1
+
+    set +e
+
+    . "$target_charm_path/lib/common"
+
+    set -e
+
+    ensure_db_docker_running
+
+    if ! out=$(ddb "$DBNAME" < <(e "UPDATE users SET password=md5('$admin_password'), mail_address='$admin_email' WHERE id=1")); then
+        debug "Failed to set password for admin users."
+        exit 1
+    fi
+    e "$control" > "$CONTROL"
+    exit 0
+fi
+
+
+##
+## We are in post_deploy, so our service is up, we need to get
+## the ``network`` and ``container``'s id to communicate with
+## him.
+##
+
+container_id=$(
+    for container_id in $(get_running_containers_for_service "$MASTER_BASE_SERVICE_NAME"); do
+        e "$container_id"
+        break
+    done
+)
+
+read-0 network container_ip < <(get_container_network_ip "$container_id")
+
+
+##
+## We'll need password from mysql database config
+##
+
+PASSWORD="$(e "$mysql_config" | shyaml get-value password)" &&
+USER="$(e "$mysql_config" | shyaml get-value user)" || {
+    err "Couldn't retrieve information of ${DARKCYAN}mysql-database${NORMAL}'s relation."
+    exit 1
+}
+
+default_lang=$(options-get default-lang) || exit 1
+
+
+## We deliberately are not setting these: (they will be considered off)
+# newsletter_subscribe	"on"
+# send_password_by_mail	"on"
+
+
+debug "Running install.php"
+out=$(docker run --network "$network" docker.0k.io/curl -s -X POST -H "Host: $domain" -L \
+       -F language="$default_lang" \
+       -F dbhost="$ts" \
+       -F dbuser="$USER" \
+       -F dbpasswd="$PASSWORD" \
+       -F dbname="$DBNAME" \
+       -F prefix="" \
+       -F admin_name="admin" \
+       -F admin_pass1="$admin_password" \
+       -F admin_pass2="$admin_password" \
+       -F admin_mail="$admin_email" \
+       -F install="Start+installation" \
+       "$url/install.php") || {
+    err "Failed to run install.php script"
+    exit 1
+}
+
+
+#e "$out" > "$SERVICE_DATASTORE/out.html"
+# debug "written $SERVICE_DATASTORE/out.html"
+had_error=
+while read-0 error_msg; do
+    had_error=1
+    err "Installation failed with these errors:"
+    echo "- ${error_msg}" >&2
+done < <(e "$out" | xpath "//div[@class='errors']/ul/li/text()")
+
+if [ "$had_error" ]; then
+    exit 1
+fi
+
+debug "No error catched on \`\`install.php\`\` result."
+e "$control" > "$CONTROL"
+
+exit 0
\ No newline at end of file
diff --git a/piwigo/metadata.yml b/piwigo/metadata.yml
new file mode 100644
index 00000000..df8d40f6
--- /dev/null
+++ b/piwigo/metadata.yml
@@ -0,0 +1,27 @@
+description: Piwigo
+subordinate: true
+
+default-options:
+  admin-password: admin
+  default-lang: en_US
+
+uses:
+  mysql-database:
+    #constraint: required | recommended | optional
+    #auto: pair | summon | none ## default: pair
+    constraint: required
+    auto: summon
+    solves:
+      database: "main storage"
+  publish-dir:
+    #constraint: required | recommended | optional
+    #auto: pair | summon | none ## default: pair
+    scope: container
+    constraint: required
+    auto: summon
+    solves:
+      container: "main running server"
+    default-options:
+      location: !var-expand "$DATASTORE/$BASE_SERVICE_NAME/opt/apps/piwigo"
+      # data-dirs: ## write permission for web-app
+      #   - .