#!/bin/bash
TEMPLATE_VM_ID=202404001

PROFS_CPU_CORES_MULTIPLIER=4
PROFS_RAM_MULTIPLIER=2

INPUT_FILE=$1
POOL_NAME=$2
NEXT_VM_ID=$3

if ! command -v jq &> /dev/null; then
    echo "jq is not installed. Please install it using 'apt install jq' to continue."
    exit 1
fi

if ! command -v mariadb &> /dev/null; then
    echo "mariadb is not installed. Please install it using 'apt install mariadb-client' to continue."
    exit 1
fi

if [ -z "$INPUT_FILE"  ] | [ -z "$POOL_NAME" ] | [ -z "$NEXT_VM_ID" ]; then
    echo "Usage: $0 <path-to-input-file> <resource-pool-name> <start-vmid>"
    echo "Input file format:"
    echo -e "\tusername1"
    echo -e "\tusername2"
    echo -e "\t..."
    exit 1
fi

POOL_EXISTS=$(pvesh get /pools --output-format=json | jq -r ".[] | select(.poolid == \"$POOL_NAME\") | .poolid")

if [ "$POOL_EXISTS" == "$POOL_NAME" ]; then
    echo "Resource pool '$POOL_NAME' exists."
else
    echo "Resource pool '$POOL_NAME' does not exist, creating..."
    pvesh create /pools --poolid $POOL_NAME
fi

while read -r username; do
    USERNAME=$(echo "$line")
    echo "Creating VM for $username in $POOL_NAME"
    qm clone $TEMPLATE_VM_ID $NEXT_VM_ID --name "$username" --full false --pool $POOL_NAME
    qm set $NEXT_VM_ID --args "-fw_cfg name=\"opt/fr.iut-fbleau/hostname\",string=\"vm-$username\" -fw_cfg name=\"opt/fr.iut-fbleau/domainname\",string=\"vm.iut-fbleau.fr\""

    if [ "$POOL_NAME" == "profs" ]; then
        CURRENT_CORES=$(qm config $NEXT_VM_ID | grep "^cores" | awk '{print $2}')
        CURRENT_RAM=$(qm config $NEXT_VM_ID | grep "^memory" | awk '{print $2}')
        NEW_CORES=$((CURRENT_CORES * PROFS_CPU_CORES_MULTIPLIER))
        NEW_RAM=$((CURRENT_RAM * PROFS_RAM_MULTIPLIER))
        qm set $NEXT_VM_ID --cores $NEW_CORES --memory $NEW_RAM
    fi

    MAC_ADDRESS=$(grep -Po 'net\d+: virtio=\K[^,]+' /etc/pve/qemu-server/$NEXT_VM_ID.conf)
    mariadb --host=gimli.iut-fbleau.fr --user=proxmox --password="..." -e "CALL add_vm('$MAC_ADDRESS', 'vm-$username')" kea

    pvesh set /access/acl --path /vms/$NEXT_VM_ID --roles etu --users "$username@arda.lan"
    ((NEXT_VM_ID++))
done < "$INPUT_FILE"