import streamlit as st
from evaluate import evaluator
import evaluate
import datasets
from huggingface_hub import HfApi, ModelFilter
from transformers import AutoTokenizer, AutoModelForSequenceClassification
from transformers import AutoTokenizer, AutoModelForMaskedLM
from transformers import pipeline, AutoConfig
import matplotlib.pyplot as plt

st.title("Metric Compare")

st.markdown("### Choose the dataset you want to use for the comparison:")

api = HfApi()
dsets = [d.id for d in api.list_datasets(filter="task_categories:text-classification", sort = "downloads", direction=-1, limit = 20) if d.id !='glue']

dset = st.selectbox('Choose a dataset from the Hub', options=dsets)

info = datasets.get_dataset_infos(dset)

dset_config = st.selectbox('What config do you want to use?', options=list(info))

splitlist= []
for s in info[dset_config].splits:
  if s != 'train':
    splitlist.append(s)

dset_split = st.selectbox('Choose a dataset split for evaluation', options=splitlist)


st.markdown("### Select up to 5 models to compare their performance:")

filt = ModelFilter(trained_dataset=dset)
all_models = [m.modelId for m in api.list_models(filter=filt, sort = "downloads", direction=-1, limit = 20) if 't5' not in m.tags]

models = st.multiselect(
     'Choose the models that have been trained/finetuned on this dataset', 
     options=all_models)
if len(models) > 5:
  st.exception("Please choose less than 5 models!")

st.markdown("### What two metrics do you want to compare?")

metrics = st.multiselect(
     'Choose the metrics for the comparison', 
     options=['f1', 'accuracy', 'precision', 'recall'],
     default=["f1", "accuracy"])
     
     
st.markdown("### Please wait for the dataset and models to load (this can take some time if they are big!")

### Loading data
@st.cache 
def loaddset(d, d_split):
  data = datasets.load_dataset(d, split=d_split)
  return(data)

data = loaddset(dset,dset_split)

### Defining Evaluator
eval = evaluator("text-classification")

### Loading models
@st.cache 
def load_models(mod_names):
  model_list=[]
  for i in range (len(mod_names)):
    try:
      globals()[f"tokenizer_{i}"] = AutoTokenizer.from_pretrained(mod_names[i])
      globals()[f"model_{i}"] = AutoModelForSequenceClassification.from_pretrained(mod_names[i])
      model_list.append(mod_names[i])
    except:
      continue
  return(model_list)

### Defining pipelines
@st.cache 
def load_pipes(mod_list):
  pipe_list=[]
  for i in range (len(mod_list)):
    globals()[f"pipe_{i}"] = pipeline("text-classification", model = models[i], tokenizer = models[i], device=-1) 
  return(pipe_list) 
  
model_list= load_models(models)
pipes = load_pipes(model_list)

### Defining metrics 
for i in range (len(metrics)):
  globals()[f"metrics[i]"] = evaluate.load(metrics[i])
  
## Label mapping

st.markdown("### Help us pick the right labels for your models")

st.text("The labels for your dataset are: "+ str(data.features['label'].names))

for i in range (len(model_list)):
  st.text("The labels for " + str(model_list[i]) + "are: "+ str(AutoConfig.from_pretrained(model_list[i]).id2label))
  for j in range (len(data.features['label'].names)):
    globals()[f"model[i]_label[j]"] = st.selectbox("The label corresponding to **" + str(data.features['label'].names[i]) + "** is:", AutoConfig.from_pretrained(model_list[i]).id2label)
  
_ = """
res_accuracy1 = eval.compute(model_or_pipeline=pipe1, data=data, metric=accuracy,
                       label_mapping={"NEGATIVE": 0, "POSITIVE": 1},)
res_f11 = eval.compute(model_or_pipeline=pipe1, data=data, metric=f1,
                       label_mapping={"NEGATIVE": 0, "POSITIVE": 1},)
print({**res_accuracy1, **res_f11})

pipe2 = pipeline("text-classification", model=model2, tokenizer= tokenizer2, device=0)
res_accuracy2 = eval.compute(model_or_pipeline=pipe2, data=data, metric=accuracy,
                       label_mapping={"LABEL_0": 0, "LABEL_1": 1},)
res_f12 = eval.compute(model_or_pipeline=pipe2, data=data, metric=f1,
                       label_mapping={"LABEL_0": 0, "LABEL_1": 1},)
print({**res_accuracy2, **res_f12})

pipe3 = pipeline("text-classification", model=model3, tokenizer= tokenizer3, device=0)
res_accuracy3 = eval.compute(model_or_pipeline=pipe3, data=data, metric=accuracy,
                       label_mapping={"neg": 0, "pos": 1},)
res_f13 = eval.compute(model_or_pipeline=pipe3, data=data, metric=f1,
                       label_mapping={"neg": 0, "pos": 1},)
print({**res_accuracy3, **res_f13})

pipe4 = pipeline("text-classification", model=model4, tokenizer= tokenizer4, device=0)
res_accuracy4 = eval.compute(model_or_pipeline=pipe4, data=data, metric=accuracy,
                       label_mapping={"LABEL_0": 0, "LABEL_1": 1},)
res_f14 = eval.compute(model_or_pipeline=pipe4, data=data, metric=f1,
                       label_mapping={"LABEL_0": 0, "LABEL_1": 1},)
print({**res_accuracy4, **res_f14})

pipe5 = pipeline("text-classification", model=model5, tokenizer= tokenizer5, device=0)
res_accuracy5 = eval.compute(model_or_pipeline=pipe5, data=data, metric=accuracy,
                       label_mapping={"LABEL_0": 0, "LABEL_1": 1},)
res_f15 = eval.compute(model_or_pipeline=pipe5, data=data, metric=f1,
                       label_mapping={"LABEL_0": 0, "LABEL_1": 1},)
print({**res_accuracy5, **res_f15})

plt.plot(res_accuracy1['accuracy'], res_f11['f1'], marker='o', markersize=6, color="red")
plt.annotate('distilbert', xy=(res_accuracy1['accuracy']+0.001, res_f11['f1']))
plt.plot(res_accuracy2['accuracy'], res_f12['f1'], marker='o', markersize=6, color="blue")
plt.annotate('distilbert-base-uncased-finetuned', xy=(res_accuracy2['accuracy']+0.001, res_f12['f1']))
plt.plot(res_accuracy3['accuracy'], res_f13['f1'], marker='o', markersize=6, color="green")
plt.annotate('roberta-base', xy=(res_accuracy3['accuracy']-0.009, res_f13['f1']))
plt.plot(res_accuracy4['accuracy'], res_f14['f1'], marker='o', markersize=6, color="purple")
plt.annotate('funnel-transformer-small', xy=(res_accuracy4['accuracy']-0.015, res_f14['f1']))
plt.plot(res_accuracy5['accuracy'], res_f15['f1'], marker='o', markersize=6, color="black")
plt.annotate('SENATOR', xy=(res_accuracy5['accuracy']+0.001, res_f15['f1']))

plt.xlabel('Accuracy')
plt.ylabel('F1 Score') 
#plt.xlim([0.9, 1.0])
#plt.ylim([0.9, 1.0])
plt.title('Comparing the Models')
"""