- name: Install Kubernetes on Ubuntu 24
  become: "{{ 'no' if inventory_hostname == 'nas.home.lan' else 'yes' }}"
  vars:
    helm_version: "v3.15.4"
    helm_tar: "helm-{{ helm_version }}-linux-amd64.tar.gz"
    helm_url: "https://get.helm.sh/{{ helm_tar }}"

    helm_bin: /usr/local/bin/helm

    kubeconfig: /home/jd/.kube/config

    nfs_server: "192.168.77.106"
    nfs_path: "/qda_1"

    helm_env:
      PATH: /usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/bin:/sbin
      HOME: /home/jd
      XDG_CONFIG_HOME: /home/jd/.config
      KUBECONFIG: "{{ kubeconfig }}"
  block:
    - name: Enable NTP synchronization
      ansible.builtin.command: timedatectl set-ntp true
      changed_when: false

    - name: Restart systemd-timesyncd
      ansible.builtin.service:
        name: systemd-timesyncd
        state: restarted
        enabled: true

    - name: Wait for time synchronization
      ansible.builtin.command: timedatectl status
      register: timedatectl_status
      retries: 10
      delay: 6
      until: "'System clock synchronized: yes' in timedatectl_status.stdout"
      changed_when: false

    - name: Read GitLab password from Vault
      ansible.builtin.set_fact:
        gitlab_private_key: >-
          {{
            lookup(
              'community.hashi_vault.hashi_vault',
              'secret=secret/data/gitlab '
              ~ 'field=ssh_private_key '
              ~ 'url=http://vault.home.lan:8205 '
              ~ 'token=' ~ lookup('env', 'VAULT_TOKEN')
            )
          }}
    - name: Read GitLab password from Vault
      ansible.builtin.set_fact:
        gitlab_public_key: >-
          {{
            lookup(
              'community.hashi_vault.hashi_vault',
              'secret=secret/data/gitlab '
              ~ 'field=ssh_public_key '
              ~ 'url=http://vault.home.lan:8205 '
              ~ 'token=' ~ lookup('env', 'VAULT_TOKEN')
            )
          }}

    - name: Store ssh key in file
      ansible.builtin.copy:
        content: "{{ gitlab_private_key.ssh_private_key }}\n"
        dest: /home/{{ ansible_user_id }}/.ssh/id_ed25519_gitlab
        owner: "{{ ansible_user_id }}"
        group: "{{ ansible_user_id }}"
        mode: '0600'

    - name: Store ssh key in file
      ansible.builtin.copy:
        content: "{{ gitlab_public_key.ssh_public_key }}\n"
        dest: /home/{{ ansible_user_id }}/.ssh/id_ed25519_gitlab.pub
        owner: "{{ ansible_user_id }}"
        group: "{{ ansible_user_id }}"
        mode: '0600'

    - name: Create apt proxy file
      ansible.builtin.copy:
        dest: /etc/apt/apt.conf.d/02proxy
        content: |
          Acquire::http::Proxy "http://192.168.77.101:3128";
          Acquire::https::Proxy "http://192.168.77.101:3128";
          # Acquire::https::Proxy "false";
          
    - name: Remove multiple files
      file:
        path: "{{ item }}"
        state: absent
      loop:
        - /etc/apt/sources.list.d/docker.sources
        - /etc/apt/sources.list.d/docker.list
        - /etc/apt/keyrings/docker.gpg
        - /etc/apt/trusted.gpg.d/containerd.gpg
        - /etc/apt/trusted.gpg.d/docker.gpg
    - name: Update apt cache
      apt:
        update_cache: true

    - name: Disable swap
      command: swapoff -a
      when: ansible_swaptotal_mb > 0

    - name: Remove swap from fstab
      replace:
        path: /etc/fstab
        regexp: '.*swap.*'
        replace: ''

    - name: Enable kernel modules
      copy:
        dest: /etc/modules-load.d/k8s.conf
        content: |
          overlay
          br_netfilter

    - name: Load kernel modules
      modprobe:
        name: "{{ item }}"
        state: present
      loop:
        - overlay
        - br_netfilter

    - name: Set sysctl params
      copy:
        dest: /etc/sysctl.d/k8s.conf
        content: |
          net.bridge.bridge-nf-call-iptables = 1
          net.bridge.bridge-nf-call-ip6tables = 1
          net.ipv4.ip_forward = 1

    - name: Apply sysctl
      command: sysctl --system

    - name: Install required packages
      apt:
        name:
          - apt-transport-https
          - ca-certificates
          - curl
          - git
          - gpg
          - curl 
          - gnupg2
          # - software-properties-common
          - gnupg
        state: present

    - name: Remove old Docker repository files (if any)
      file:
        path: "{{ item }}"
        state: absent
      loop:
        - /etc/apt/sources.list.d/docker.list
        - /etc/apt/keyrings/docker.gpg
        - /etc/apt/trusted.gpg.d/containerd.gpg

    - name: Create keyrings directory
      file:
        path: /etc/apt/keyrings
        state: directory
        mode: '0755'

    - name: Add Docker GPG key
      ansible.builtin.get_url:
        url: https://download.docker.com/linux/debian/gpg
        dest: /etc/apt/keyrings/docker.asc
        mode: '0644'

    - name: Add Docker repository
      ansible.builtin.copy:
        dest: /etc/apt/sources.list.d/docker.sources
        mode: '0644'
        content: |
          Types: deb
          URIs: https://download.docker.com/linux/debian
          Suites: {{ ansible_distribution_release }}
          Components: stable
          Architectures: {{ 'amd64' if ansible_architecture == 'x86_64' else ansible_architecture }}
          Signed-By: /etc/apt/keyrings/docker.asc

    - name: Update apt cache
      apt:
        update_cache: true

    - name: Install required packages
      apt:
        name:
          - containerd.io
        state: present

    - name: Generate default containerd config
      command: containerd config default
      register: containerd_config

    - name: Save containerd configuration
      copy:
        dest: /etc/containerd/config.toml
        content: "{{ containerd_config.stdout }}"
        owner: root
        group: root
        mode: 0644
    - name: Enable SystemdCgroup in containerd config
      replace:
        path: /etc/containerd/config.toml
        regexp: 'SystemdCgroup\s*=\s*false'
        replace: 'SystemdCgroup = true'

    - name: Restart containerd
      systemd:
        name: containerd
        state: restarted
        enabled: yes

    - name: Add Kubernetes GPG key
      ansible.builtin.apt_key:
        url: https://pkgs.k8s.io/core:/stable:/v1.34/deb/Release.key
        keyring: /etc/apt/keyrings/k8s.gpg
        state: present

    - name: Add Kubernetes repository
      copy:
        dest: /etc/apt/sources.list.d/k8s.list
        content: 'deb [signed-by=/etc/apt/keyrings/k8s.gpg] https://pkgs.k8s.io/core:/stable:/v1.34/deb/ /'
        owner: root
        group: root
        mode: 0644

    - name: Install Kubernetes packages
      apt:
        name:
          - kubelet
          - kubeadm
          - kubectl
        state: present
        update_cache: yes

      register: k8s_install
      retries: 5
      delay: 10
      until: k8s_install is succeeded

    - name: Hold Kubernetes packages
      command: apt-mark hold kubelet kubeadm kubectl

    - name: Enable kubelet
      systemd:
        name: kubelet
        enabled: yes
        state: started

    # # Optional UFW configuration
    # - name: Ensure UFW is installed
    #   apt:
    #     name: ufw
    #     state: present
    #   when: inventory_hostname == 'ubuntu24-vm01.home.lan'

    # - name: Allow Kubernetes ports
    #   ufw:
    #     rule: allow
    #     port: "{{ item }}"
    #     proto: tcp
    #   loop:
    #     - 6443
    #     - 2379:2380
    #     - 10250
    #   when: inventory_hostname == 'ubuntu24-vm01.home.lan'

    - name: Configure containerd for kubeadm
      copy:
        dest: /etc/containerd/config.toml
        content: |
          [plugins."io.containerd.grpc.v1.cri".containerd]
            snapshotter = "overlayfs"

          [plugins."io.containerd.grpc.v1.cri".containerd.runtimes.runc]
            runtime_type = "io.containerd.runc.v2"

          [plugins."io.containerd.grpc.v1.cri".containerd.runtimes.runc.options]
            SystemdCgroup = true

    - name: Enable and start containerd
      systemd:
        name: containerd
        state: restarted

    # - name: Pause for 5 minutes to build app cache
    #   ansible.builtin.pause:
    #     minutes: 2

    - name: Create .kube directory
      file:
        path: /home/{{ ansible_user_id }}/.kube
        state: directory
        owner: "{{ ansible_user_id }}"
        group: "{{ ansible_user_id }}"
        mode: '0755'
      when: inventory_hostname.endswith('-vm01.home.lan')

    - name: Initialize Kubernetes
      command: sudo kubeadm init --pod-network-cidr=10.244.0.0/16
      args:
        creates: /etc/kubernetes/admin.conf
      when: inventory_hostname.endswith('-vm01.home.lan')


    - name: Copy kubeconfig to user
      copy:
        remote_src: yes
        src: /etc/kubernetes/admin.conf
        dest: /home/{{ ansible_user_id }}/.kube/config
        owner: "{{ ansible_user_id }}"
        group: "{{ ansible_user_id }}"
        mode: '0644'
      when: inventory_hostname.endswith('-vm01.home.lan')
    # - name: Pause for 5 minutes to build app cache
    #   ansible.builtin.pause:
    #     minutes: 2

    - name: Install Flannel CNI
      ansible.builtin.command:
        cmd: kubectl apply -f https://raw.githubusercontent.com/flannel-io/flannel/master/Documentation/kube-flannel.yml
      environment:
        KUBECONFIG: /etc/kubernetes/admin.conf
      when: 
        - inventory_hostname.endswith("-vm01.home.lan")
        - net_driver == "flannel"
      register: flannel_result
      changed_when: "'created' in flannel_result.stdout or 'configured' in flannel_result.stdout"

    - name: Install Calico
      ansible.builtin.command:
        cmd: kubectl apply -f https://raw.githubusercontent.com/projectcalico/calico/v3.31.3/manifests/calico.yaml
      environment:
        KUBECONFIG: /etc/kubernetes/admin.conf
      when: 
        - inventory_hostname.endswith("-vm01.home.lan")
        - net_driver == "calico"
      register: calico_result
      changed_when: "'created' in calico_result.stdout or 'configured' in calico_result.stdout"

    - name: Get join command
      command: sudo kubeadm token create --print-join-command
      register: join_command
      when: inventory_hostname.endswith('-vm01.home.lan')

    - name: Save join command
      set_fact:
        worker_join_cmd: "{{ join_command.stdout }}"
      when: inventory_hostname.endswith('-vm01.home.lan')

    - name: Join cluster
      command: "{{ hostvars['debian12-vm01.home.lan'].worker_join_cmd }}"
      args:
        creates: /etc/kubernetes/kubelet.conf
      when: not inventory_hostname.endswith('-vm01.home.lan')

    - name: get repository
      git: 
        repo: 'https://github.com/ahmetb/kubectx'
        dest: /opt/kubectx
      when: inventory_hostname.endswith('-vm01.home.lan')

    - name: Create symbolic links for kubectx and kubens
      file:
        src: /opt/kubectx/{{ item }}
        dest: /usr/local/bin/{{ item }}
        state: link
      loop:
        - kubectx
        - kubens
      when: inventory_hostname.endswith('-vm01.home.lan')

    - name: Install Additional packages
      apt:
        name:
          - nfs-common
          - tmux
          - telnet
        state: present

    - name: Ensure aliases exist in user's .bashrc
      lineinfile:
        path: "/home/{{ user_name }}/.bashrc"
        line: "alias {{ item.key }}='{{ item.value }}'"
        state: present
        create: yes
      loop: "{{ aliases | dict2items }}"
      when: inventory_hostname.endswith('-vm01.home.lan')


    # ----------------------------
    # 1. Install Helm v3
    # ----------------------------
    - name: Download Helm
      get_url:
        url: "{{ helm_url }}"
        dest: "/tmp/{{ helm_tar }}"
        mode: '0644'
      when: inventory_hostname.endswith('-vm01.home.lan')

    - name: Create Helm config directory
      file:
        path: /home/jd/.config/helm
        state: directory
        mode: '0755'
      when: inventory_hostname.endswith('-vm01.home.lan')
      
    - name: Extract Helm archive
      unarchive:
        src: "/tmp/{{ helm_tar }}"
        dest: /tmp
        remote_src: true
      when: inventory_hostname.endswith('-vm01.home.lan')

    - name: Install Helm binary
      copy:
        src: /tmp/linux-amd64/helm
        dest: "{{ helm_bin }}"
        mode: '0755'
        remote_src: true
      when: inventory_hostname.endswith('-vm01.home.lan')

    - name: Verify Helm installation
      command: helm version
      environment: "{{ helm_env }}"
      when: inventory_hostname.endswith('-vm01.home.lan')


    - name: Ensure correct ownership of Helm config
      file:
        path: /home/jd/.kube
        state: directory
        owner: jd
        group: jd
        mode: '0700'
      when: inventory_hostname.endswith('-vm01.home.lan')

    - name: Ensure correct ownership of Helm config
      file:
        path: /home/jd/.config/helm
        state: directory
        owner: jd
        group: jd
        mode: '0700'
      when: inventory_hostname.endswith('-vm01.home.lan')
    # ----------------------------
    # 3. Add NFS Helm repo
    # ----------------------------
    - name: Add NFS Subdir External Provisioner repo
      kubernetes.core.helm_repository:
        name: nfs-subdir-external-provisioner
        repo_url: https://kubernetes-sigs.github.io/nfs-subdir-external-provisioner/
      environment: "{{ helm_env }}"
      become_user: "{{ ansible_user_id }}"
      when: inventory_hostname.endswith('-vm01.home.lan')
    
    - name: Update Helm repos
      command: helm repo update
      environment: "{{ helm_env }}"
      become_user: "{{ ansible_user_id }}"
      when: inventory_hostname.endswith('-vm01.home.lan')

    # ----------------------------
    # 4. Install NFS provisioner
    # ----------------------------
    - name: Install NFS Subdir External Provisioner
      kubernetes.core.helm:
        name: nfs-storage
        chart_ref: nfs-subdir-external-provisioner/nfs-subdir-external-provisioner
        release_namespace: kube-system
        create_namespace: true
        values:
          nfs:
            server: "{{ nfs_server }}"
            path: "{{ nfs_path }}"
          storageClass:
            name: nfs-client
            defaultClass: true
        kubeconfig: "{{ kubeconfig }}"
      environment: "{{ helm_env }}"
      become_user: "{{ ansible_user_id }}"
      when: inventory_hostname.endswith('-vm01.home.lan')

    - name: Ensure correct ownership of Helm config
      file:
        path: /home/jd/.config
        state: directory
        owner: jd
        group: jd
      when: inventory_hostname.endswith('-vm01.home.lan')

    - name: Ensure correct ownership of Helm config
      file:
        path: /home/jd/.kube/config
        state: file
        owner: jd
        group: jd
        mode: '0600'
      when: inventory_hostname.endswith('-vm01.home.lan')