import pyterrier as pt
pt.init()
import numpy as np
import pandas as pd
import gradio as gr
from pyterrier_doc2query import Doc2Query, QueryScorer, QueryFilter
from pyterrier_dr import ElectraScorer
from pyterrier_gradio import Demo, MarkdownFile, interface, df2code, code2md, EX_D

MODEL = 'macavaney/doc2query-t5-base-msmarco'
SCORE_MODEL = 'crystina-z/monoELECTRA_LCE_nneg31'
PERCENTILES_BY_5 = np.array([-3.80468750e+00, -2.21679688e+00, -1.25683594e+00, -5.58105469e-01, -7.65323639e-04, 4.69482422e-01, 8.83300781e-01, 1.25878906e+00, 1.61035156e+00, 1.94335938e+00, 2.26562500e+00, 2.58007812e+00, 2.89648438e+00, 3.21484375e+00, 3.54687500e+00, 3.90039062e+00, 4.30078125e+00, 4.77343750e+00, 5.37109375e+00])
COLORS = ['rgb(252, 132, 100)','rgb(252, 148, 116)','rgb(252, 166, 137)','rgb(252, 183, 156)','rgb(253, 200, 178)','rgb(254, 215, 198)','rgb(255, 228, 216)','rgb(255, 237, 228)','rgb(256, 245, 240)','rgb(256, 256, 256)','rgb(247, 252, 245)','rgb(240, 250, 237)','rgb(233, 247, 228)','rgb(222, 242, 216)','rgb(209, 237, 203)','rgb(195, 232, 188)','rgb(180, 225, 173)','rgb(163, 218, 157)','rgb(145, 210, 142)','rgb(125, 201, 126)']

doc2query = Doc2Query(MODEL, append=True, num_samples=5)
electra = ElectraScorer()
query_scorer = QueryScorer(electra)
query_filter = QueryFilter(t=0, append=False)

COLAB_NAME = 'pyterrier_doc2query.ipynb'
COLAB_INSTALL = '''
!pip install -q git+https://github.com/terrier-org/pyterrier
!pip install -q git+https://github.com/terrierteam/pyterrier_doc2query
'''.strip()
COLAB_INSTALL_MM = COLAB_INSTALL + '\n!pip install -q git+https://github.com/terrierteam/pyterrier_dr faiss-cpu'

def predict(input, model, append, num_samples):
  assert model == MODEL
  doc2query.append = append
  doc2query.num_samples = num_samples
  code = f'''import pandas as pd
from pyterrier_doc2query import Doc2Query

doc2query = Doc2Query({repr(model)}, append={append}, num_samples={num_samples})

doc2query({df2code(input)})
'''
  res = doc2query(input)
  vis = generate_vis(res)
  return (doc2query(input), code2md(code, COLAB_INSTALL, COLAB_NAME), vis)

def generate_vis(df):
  result = []
  for row in df.itertuples(index=False):
    qs = []
    if hasattr(row, 'querygen_score'):
      for q, score in zip(row.querygen.split('\n'), row.querygen_score):
        bucket = np.searchsorted(PERCENTILES_BY_5, score)
        color = COLORS[bucket]
        percentile = bucket * 5
        qs.append(f'''
<div>
<span title="score={score:.4f}, in the {percentile}th percentile of scores" style="border: 1px solid #888; border-radius: 3px; font-size: 0.6em; font-family: monospace; background-color: {color}; padding: 1px 3px;">{percentile}th</span> {q}
</div>
''')
    elif hasattr(row, 'querygen'):
      for q in row.querygen.split('\n'):
        qs.append(f'''
<div>{q}</div>
''')
    qs = '\n'.join(qs)
    if qs:
      qs = f'''
<div><strong>Expansion Queries:</strong></div>
{qs}
'''
    text = row.text.replace('\n', '<br/>')
    result.append(f'''
<div style="font-size: 1.2em;">Document: <strong>{row.docno}</strong></div>
<div style="margin: 4px 0 16px; padding: 4px; border: 1px solid black;">
<div>
{text}
</div>
{qs}
</div>
''')
  return '\n'.join(result)

def predict_mm(input, model, num_samples, score_model, filter_pct):
  assert model == MODEL
  assert score_model == SCORE_MODEL
  doc2query.append = False
  doc2query.num_samples = num_samples
  if filter_pct > 0:
    query_filter.t = PERCENTILES_BY_5[filter_pct//5-1]
    pipeline = doc2query >> query_scorer >> query_filter
    code = f'''import pyterrier as pt ; pt.init()
import pandas as pd
from pyterrier_doc2query import Doc2Query, QueryScorer, QueryFilter
from pyterrier_dr import ElectraScorer

doc2query = Doc2Query({repr(model)}, append=False, num_samples={num_samples})
scorer = ElectraScorer({repr(score_model)})
pipeline = doc2query >> QueryScorer(scorer) >> QueryFilter(append=False, t={query_filter.t})
# use append=True when indexing; t={query_filter.t} is the {filter_pct}th percentile for generated queries on MS MARCO

pipeline({df2code(input)})
'''
  else:
    pipeline = doc2query >> query_scorer
    code = f'''import pyterrier as pt ; pt.init()
import pandas as pd
from pyterrier_doc2query import Doc2Query, QueryScorer
from pyterrier_dr import ElectraScorer

doc2query = Doc2Query({repr(model)}, append=False, num_samples={num_samples})
scorer = ElectraScorer({repr(score_model)})
pipeline = doc2query >> QueryScorer(scorer)

pipeline({df2code(input)})
'''
  res = pipeline(input)
  vis = generate_vis(res)
  res['querygen_score'] = res['querygen_score'].apply(lambda x: '[ ' + ', '.join(str(v) for v in x) + ' ]')
  return (res, code2md(code, COLAB_INSTALL_MM, COLAB_NAME), vis)

interface(
  MarkdownFile('README.md'),
  Demo(
    predict,
    EX_D,
    [
    gr.Dropdown(
      choices=[MODEL],
      value=MODEL,
      label='Model',
      interactive=False,
    ), gr.Checkbox(
      value=doc2query.append,
      label="Append",
    ), gr.Slider(
      minimum=1,
      maximum=10,
      value=doc2query.num_samples,
      step=1.,
      label='# Queries'
    )],
  ),
  MarkdownFile('mm.md'),
  Demo(
    predict_mm,
    EX_D,
    [
    gr.Dropdown(
      choices=[MODEL],
      value=MODEL,
      label='Model',
      interactive=False,
    ), gr.Slider(
      minimum=1,
      maximum=10,
      value=doc2query.num_samples,
      step=1.,
      label='# Queries'
    ), gr.Dropdown(
      choices=[SCORE_MODEL],
      value=SCORE_MODEL,
      label='Scorer',
      interactive=False,
    ), gr.Slider(
      minimum=0,
      maximum=95,
      value=10,
      step=5,
      label='Filter (top % of queries)'
    )],
  ),
  MarkdownFile('wrapup.md'),
).launch(share=False)