import { adlib, listDependencies }  from 'adlib'

adlib(template, settings) // renders an adlib template
listDependencies(template) // list all dependecies of an adlib template

adlib.adlib(template, settings)
adlib.listDependencies(template)

const template: {
  value: '{{ instance.color }}'
};

const settings: {
  instance: {
    color: 'red'
  }
};

const result = adlib(template, settings);
// > { value: 'red' }

const template = 'Injuries: {{CRASHID}}<br />On Scene: {{ISREPORTONSCENE}}'
const deps = adlib.listDependencies(template); // CRASHID, ISREPORTONSCENE

let template = {
  value: 'The {{thing.animal}} was {{thing.color}}'
};
let settings = {
  thing: {
    color: 'red',
    animal: 'fox'
  }
};
let result = adlib(template, settings);
//> {value: 'The fox was red'}

let template = {
  value: '{{s.obj}}'
};
let settings = {
  s: {
    obj: {
      val: 'red'
    }
  }
};
let result = adlib(template, settings);
//> { value: {val: 'red'}}

let template = {
  values: ['{{s.animal}}', 'fuzzy', '{{s.color}}'],
  names: '{{s.names}}'
};
let settings = {
  s: {
    animal: 'bear',
    color: 'brown',
    names: ['larry', 'sergey']
  }
};
let result = adlib(template, settings);
//> result.values === ['bear', 'fuzzy', 'brown']
//> result.names === ['larry', 'sergey']

// Pattern
// {{key:transformFnName}}

let  tmpl = `{{s.animal.type:upcase}}`;
let settings = {
  s: {
    animal: {
      type: 'bear'
    }
  }
}
// will parse into
// key: s.animal.type
// value: 'bear'
// transformFnName: 'upcase'

let template = {
  value:'{{s.animal.type:upcase}}'
};
let settings = {
  s: {
    animal: {
      type: 'bear'
    },
    color: 'brown'
  }
};
let transforms = {
  upcase (key, val, settings) {
    return val.toUpperCase();
  }
};
let result = adlib(template, settings, transforms);
//> result.value = 'BEAR'

let template = {
  value:'{{s.animal.type:translate}}'
};
let settings = {};
let transforms = {
  translate (key, val, settings) {
    // the translator is passed in from the consuming application
    // note that the settings hash is empty
    return translator.translate(key);
  }
};
let result = adlib(template, settings, transforms);
//> result.value = 'string returned from translation system'

{
  someProp: 'red'
  val: '{{key.path:optional}}'
}

{
  someProp: 'red'
}

{
  someProp: 'red'
  vals: [
    'red',
    '{{key.path:optional}}'
  ]
}

// returns
{
  someProp: 'red'
  vals: [
    'red',
  ]
}

let template = {
  someProp: 'red',
  operationalLayers: [
    {
      url: `{{layers.pipes.url}}`,
      fields: [
        {
          key: 'direction',
          fieldName: `{{layers.pipes.directionField:optional:3}}`
        }
      ]
    }
  ]
};
let settings = {
  layers: {
    pipes: {
      url: 'http://someserver.com/23'
    }
  }
};
// will returns
{
  someProp: 'red'
  operationalLayers: []
}

let template = {
  dataset: {
    title: {{layer.name||item.title}},
    modified: {{metadata.some.super.nested.value.bc.im.a.weird.xml.doc:toISO||item.modified:toISO}},
    tags: {{metadata.categories||item.tags}}
  }
}

let settings = {
  metadata: {
    categories: [
      'citations',
      'civil offense',
      'misdemeanor'
    ],
    some: {
      super: {
        nested: {
          value: {
            bc: {
              im: {
                a: {
                  weird: {
                    xml: {
                      doc: '1505836376836'
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  item: {
    title: '2014 Parking Violations',
    tags: [
      'Parking',
      'Washington',
      'Citations',
      'Crimes',
      'Law Enforcement',
      'Nuisance',
      'Cars'
    ]
  },
  layer: {}
}

let transforms = {
  toISO: function (key, val, settings) {
    if (isStringAndNotADateValue(val)) {
      return new Date(val).toISOString()
    }
  }
}

adlib(template, settings, transforms)
// => returns
{
  dataset: {
    title: '2014 Parking Violations',
    modified: '2017-09-19T15:52:56.836Z',
    tags: [
      'citations',
      'civil offense',
      'misdemeanor'
    ]
  }
}

let template = {
  msg: 'Site is at {{obj.mainUrl||obj.otherUrl||https://foo.bar?o=p&e=n}}'
}

var settings = {}

let result = adlib(template, settings);
// => returns
// 'Site is at https://foo.bar?o=p&e=n'