#!/usr/bin/env ruby

require 'rubygems'
require 'io/console'
require 'trollop'

require 'jirasync'

def prompt_for_password
    print("Please enter password: ")
    pw = STDIN.noecho(&:gets).chomp
    puts
    pw
end

opts = Trollop::options do
    banner <<-EOS
Utility to sync a jira project to the local file system.

Usage:
       jira-sync [options] [command]
where command is one of the following

  fetch-all: fetches all tickets from the given project
     update: fetches all tickets that have been updated/
             added since the last run

where [options] are:
EOS
    opt :baseurl, "Jira base url", :type => :string
    opt :project, "Project key", :type => :string
    opt :user, "User, defaults to the current system user", :type => :string
    opt :password, "Password, if not specified there, will be an interactive prompt", :type => :string
    opt :target, "Target directory, defaults to the project key", :type => :string
    opt :store_attachments, "Fetch and store attachments"
end

Trollop::die :baseurl, "must be speficied" if !opts[:baseurl]
Trollop::die :project, "must be speficied" if !opts[:project]


user = opts[:user] || ENV['USER']
pw = opts[:password] || prompt_for_password
target = opts[:target] || opts[:project].chomp
project = opts[:project]
store_attachments = opts[:store_attachments]

command = ARGV[0]

if !["fetch", "update"].include?(command)
    STDERR.puts("'#{command}' is not a valid command")
    exit 1
end

client = JiraSync::JiraClient.new(opts[:baseurl], user, pw)
repo = JiraSync::LocalIssueRepository.new(target)
syncer = JiraSync::Syncer.new(client, repo, project, store_attachments)

if command == "fetch"
    if (repo.state_exists?)
        update_statement=<<-END
jira-sync \
    --baseurl #{opts[:baseurl]} \\
    --user #{user} \\
    --project #{project} \\
    --target #{target} \\
    --store-attachments \\
    update
        END

        STDERR.puts <<-END
Synchronisation state file found. Please use 'update' for incremental update
or sync to an empty directory. Try to use a statement along the following lines
#{update_statement}
        END
        exit 1
    end
    syncer.fetch_all
end

if command == "update"
    if (!repo.state_exists?)
        fetch_statement=<<-END
jira-sync \
    --baseurl #{opts[:baseurl]} \\
    --user #{user} \\
    --project #{project} \\
    --target #{target} \\
    --store-attachments \\
    fetch
        END

        STDERR.puts <<-END
No synchronisation state file found. Please use 'fetch' for an initial download.
Try to use a statement along the following lines
#{fetch_statement}
        END
        exit 1
    end

    syncer.update
end