#!/usr/bin/env bash
set -e

curp="$(cd "$(dirname "$0")" && pwd)"

# prefer gitea executable in project folder and fallback to $PATH
[[ -x "$curp/gitea" ]] && giteae="$curp/gitea" \
    || giteae=$(command -v gitea 2>/dev/null) \
    || { echo "gitea executable not found!" 1>&2;exit 1; }

set_in_file() {
    # ensure there is a line with $1=$2 in file $3
    grep -q "^$1=" "$3" && sed "s/^$1=.*/$1=$2/" -i "$3" \
        || echo "$1=$2" >> "$3"

}
gen_app_ini() {
    source "$curp/.defaults.sh"
    for x in $(find "$curp/.defaults" -type f -name "*.sh"); do
        source "$x"
    done
    truncate -s 0 "$curp/custom/conf/app.ini"

    # first build the template
    for x in $( ( set -o posix ; set ) |grep -o '^A_DEFAULT_SETTINGS.*=' | cut -d '=' -f1); do
        echo -e "${!x}\n" >> "$curp/custom/conf/app.ini"
    done
    # then replace variables in the template
    for x in $(cat "$curp/custom/conf/app.ini" | grep -o '{{%.*%}}' | sed -e 's/^{{%//' -e 's/%}}//' | sort | uniq); do
        sed -i -e "s#{{%$x%}}#$(echo -n "${!x}"|sed -z 's/\n/\\n/g')#" "$curp/custom/conf/app.ini"
    done
}
create_admin() {
    if [ -z "${ADMIN_PASSWORD}" ]; then
        ADMIN_PASSWORD=$(head /dev/urandom | tr -dc 'A-Za-z0-9_' | head -c 32)
        echo "pass: ${ADMIN_PASSWORD}"
        set_in_file "ADMIN_PASSWORD" "${ADMIN_PASSWORD}" "$curp/.custom_defaults.sh"
    fi
    set +e
    output=$("$giteae" admin create-user \
        --username "${ADMIN_USER}" \
        --email "${ADMIN_EMAIL}" \
        --password "${ADMIN_PASSWORD}" \
        --admin \
        --access-token)
    ecode="$?"
    set -e
    echo "$output" 1>&2
    if [ "$ecode" -ne 0 ]; then
        echo "command exited with status code: $ecode"
        return "$ecode"
    else
        ADMIN_TOKEN=$(echo -n "$output" | grep 'Access token was successfully created' | rev | cut -d ' ' -f1 | rev)
        echo "token: ${ADMIN_TOKEN}"
        set_in_file "ADMIN_TOKEN" "${ADMIN_TOKEN}" "$curp/.custom_defaults.sh"
    fi
}
create_org() { 
    curl --silent -X POST "${apiurl}/orgs" \
        -H "Authorization: token ${ADMIN_TOKEN}" \
        -H "accept: application/json" \
        -H "Content-Type: application/json" \
        -d "{ \"username\": \"$1\", \"visibility\": \"limited\"}" 1>&2
}

create_repo() {
    curl --silent -X POST "${apiurl}$2" \
        -H "Authorization: token ${ADMIN_TOKEN}" \
        -H "accept: application/json" \
        -H "Content-Type: application/json" \
        -d "{\"auto_init\": false, \"private\": true, \"name\": \"$1\"}" 1>&2
}

# load local file
touch "$curp/.custom_defaults.sh" && chmod 0600 "$curp/.custom_defaults.sh"
source "$curp/.custom_defaults.sh"
if [ -z "${ADMIN_EMAIL}" ]; then
    while [ -z "${ADMIN_EMAIL}" ]; do
        read -p "ADMIN_EMAIL=" ADMIN_EMAIL
    done
    set_in_file "ADMIN_EMAIL" "${ADMIN_EMAIL}" "$curp/.custom_defaults.sh"
fi

mkdir -p "$curp/custom/conf/" "$curp/log"

[ -z "$ADMIN_USER" ] && ADMIN_USER="$USER"

# generate app.ini
gen_app_ini

# migrate database
"$giteae" migrate 1>>"$curp/log/db_init.log" 2>>"$curp/log/db_init.log"

# create admin user
[ -z "${ADMIN_TOKEN}" ] && admininit=$(create_admin 2>>"$curp/log/admin_init.log")

SCREEN_SES_NAME=${SCREEN_SES_NAME:-gitea-dev}

# run gitea in screen
if ! screen -S ${SCREEN_SES_NAME} -Q "select" . > /dev/null 2>&1; then
    screen -S "${SCREEN_SES_NAME}" -d -m -- sh -c "\"$giteae\" web 2>&1 | tee \"$curp/log/web.log\""
    SLEEP_SECS=10
    echo "Sleeping for ${SLEEP_SECS} seconds for web service to start!" 1>&2
    for x in $(seq ${SLEEP_SECS} -1 1); do
        echo -n "$x " 1>&2
        sleep 1
    done
    echo "" 1>&2
fi

# reload .custom_defaults as they may have been changed
source "$curp/.custom_defaults.sh"

serverurl="$(cat custom/conf/app.ini | grep '^ROOT_URL.*=' | rev | cut -d '=' -f1 | rev | tr -d '[:space:]')"
pushuri="$(echo "$serverurl" | perl -pe "s#(https?://)#\${1}${ADMIN_USER}:${ADMIN_PASSWORD}@#" )"
apiurl="$serverurl/api/v1"
# init ripos
for REPO in ${REPOS}; do
    repoPath="$(echo "$REPO" | cut -d ':' -f1 | tr -d '[:space:]')"
    repoOrg="$(echo "$REPO" | cut -d ':' -f2 | tr -d '[:space:]')"
    repoName="$(echo "$REPO" | cut -d ':' -f3 | tr -d '[:space:]')"
    [ -z "$repoName" ] && repoName="$(basename "$repoPath")"
    if [ -z "$repoOrg" ]; then
        repoAPIEP="/user/repos"
        repoOwner="${ADMIN_USER}"
    else
        create_org "$repoOrg"
        sleep 1
        repoAPIEP="/org/$repoOrg/repos"
        repoOwner="$repoOrg"
    fi
    create_repo "${repoName}" "${repoAPIEP}" 1>&2
    ( 
        cd "$repoPath"
        git remote add gitea-debug-dev "$pushuri/${repoOwner}/${repoName}.git" || true
        git push "gitea-debug-dev" master 
    )
    exit
done