#!/usr/bin/python

from getopt import getopt
import os
import sys
from laydi import laydi, project, workflow, main
#import workflows
from laydi import cfgparse
import optparse

PROGRAM_NAME = 'laydi'
VERSION = '0.1.0'

def list_workflows():
    print 'laydi %s' % VERSION
    print
    print 'Available workflows:'

    wfs = workflow.workflow_list()
    for wf in wfs:
        print '    %s (%s)' % (wf.ident, wf.name)
    print


def generate_config():
    fn = os.path.join(os.environ['HOME'], '.laydi')
    if not os.path.exists(fn):
	fd = open(fn, 'w')
	print >> fd, "home = %s" % os.environ['HOME']
        print >> fd, "datadir = %%(home)s/laydi/datasets"
        print >> fd, "workflowdir = %%(home)s/laydi/workflows"
	fd.close()
   
    laydidir = os.path.join(os.environ['HOME'], 'laydi')
    if not os.path.exists(laydidir):
	os.mkdir(laydidir, 0755)

    datadir = os.path.join(os.environ['HOME'], 'laydi/datasets')
    if not os.path.exists(datadir):
	os.mkdir(datadir, 0755)

    workflowdir = os.path.join(os.environ['HOME'], 'laydi/workflows')
    if not os.path.exists(workflowdir):
	os.mkdir(workflowdir, 0755)


def parse_options():
    conf_files = ['/etc/laydirc',
                  os.path.join(os.environ['HOME'], '.laydi')]

    cp = cfgparse.ConfigParser()

    cp.add_option('home', type='string',
                  default=os.environ['HOME'])

    cp.add_option('datadir', type='string',
                  default=os.environ['HOME'])
    cp.add_option('workflowdir', type='string',
                  default='workflows')
    cp.parse()
    op = optparse.OptionParser()

    op.add_option('-l', '--list-workflows',
                  action='store_true',
                  default=False,
                  help='List available workflows.')

    op.add_option('-w', '--workflow',
                 default='chemometric',
                 help='Start with selected workflow')

    op.add_option('-c', '--generate-config',
                 action='store_true',
                 help='Generate configuration file ~/.laydi if it does not exist.')

    for cf in conf_files:
        if os.path.isfile(cf):
            cp.add_file(cf)

    return cp.parse(op)
    
if __name__ == '__main__':
    import gtk
    import gnome
    
    gnome.program_init(PROGRAM_NAME, VERSION)

    options, params = parse_options()
    main.options = options
    
    for dir in main.options.workflowdir.split(';'):
        if dir.strip() != "" and os.path.exists(dir):
            sys.path.append(dir)

    if options.list_workflows:
        list_workflows()
        sys.exit(0)

    if options.generate_config:
        generate_config()
	sys.exit(0)

    selected_wf = workflow.find_workflow(options.workflow) 
    if selected_wf == None: selected_wf = workflow.EmptyWorkflow

#    workflow_list = workflow.workflow_list()
#    for wf in workflow_list:
#        if wf.ident == options.workflow:
#            selected_wf = wf            

    main.set_workflow(selected_wf())
    main.set_options(options)
    app = laydi.LaydiApp()

    main.set_application(app)
    main.set_project(project.Project())

    app.set_project(main.project)
    app.show()
    gtk.main()