import gradio as gr
import pandas as pd

from nomad_data import country_emoji_map, data, terrain_emoji_map

df = pd.DataFrame(data)

js_func = """
function refresh() {
    const url = new URL(window.location);

    if (url.searchParams.get('__theme') !== 'dark') {
        url.searchParams.set('__theme', 'dark');
        window.location.href = url.href;
    }
}
"""


def style_quality_of_life(val):
    """Style the Quality of Life column with color gradient from red to green"""
    if pd.isna(val):
        return 'background-color: rgba(200, 200, 200, 0.2); color: #999; font-style: italic;'
    
    min_val = 5.0 
    max_val = 9.0  
    
    normalized = (val - min_val) / (max_val - min_val)
    normalized = max(0, min(normalized, 1))
    
    percentage = int(normalized * 100)
    
    if normalized < 0.5:
        start_color = f"rgba(255, {int(255 * (normalized * 2))}, 0, 0.3)"
        end_color = "rgba(255, 255, 255, 0)"
    else:
        start_color = f"rgba({int(255 * (1 - (normalized - 0.5) * 2))}, 255, 0, 0.3)"
        end_color = "rgba(255, 255, 255, 0)"
    
    return f'background: linear-gradient(to right, {start_color} {percentage}%, {end_color} {percentage}%)'

def style_internet_speed(val):
    """Style the Internet Speed column from red (slow) to green (fast)"""
    if pd.isna(val):
        return 'background-color: rgba(200, 200, 200, 0.2); color: #999; font-style: italic;'
    
    min_val = 20   # Slow internet
    max_val = 300  # Fast internet
    
    normalized = (val - min_val) / (max_val - min_val)
    normalized = max(0, min(normalized, 1))
    
    percentage = int(normalized * 100)
    
    if normalized < 0.5:
        start_color = f"rgba(255, {int(255 * (normalized * 2))}, 0, 0.3)"
        end_color = "rgba(255, 255, 255, 0)"
    else:
        start_color = f"rgba({int(255 * (1 - (normalized - 0.5) * 2))}, 255, 0, 0.3)"
        end_color = "rgba(255, 255, 255, 0)"
    
    return f'background: linear-gradient(to right, {start_color} {percentage}%, {end_color} {percentage}%)'

def style_dataframe(df):
    """Apply styling to the entire dataframe"""
    styled_df = df.copy()
    
    styled_df['Terrain'] = styled_df['Terrain'].apply(lambda x: terrain_emoji_map.get(x, x) if pd.notna(x) else x)
    
    styler = styled_df.style
    
    styler = styler.applymap(style_quality_of_life, subset=['Quality of Life'])
    styler = styler.applymap(style_internet_speed, subset=['Internet Speed (Mbps)'])
    
    styler = styler.highlight_null(props='color: #999; font-style: italic; background-color: rgba(200, 200, 200, 0.2)')
    
    styler = styler.format({
        'Quality of Life': lambda x: f'{x:.1f}' if pd.notna(x) else 'Data Not Available',
        'Internet Speed (Mbps)': lambda x: f'{x:.1f}' if pd.notna(x) else 'Data Not Available',
        'Monthly Cost Living (USD)': lambda x: f'${x:.0f}' if pd.notna(x) else 'Data Not Available',
        'Visa Length (Months)': lambda x: f'{x:.0f}' if pd.notna(x) else 'Data Not Available',
        'Visa Cost (USD)': lambda x: f'${x:.0f}' if pd.notna(x) else 'Data Not Available',
        'Growth Trend (5 Years)': lambda x: f'{x}' if pd.notna(x) else 'Data Not Available'
    })
    
    return styler

def filter_data(country, max_cost):
    """Filter data based on country and maximum cost of living"""
    filtered_df = df.copy()
    
    if country and country != "All":
        filtered_df = filtered_df[filtered_df["Country"] == country]
    
    if max_cost < df["Monthly Cost Living (USD)"].max():
        cost_mask = (filtered_df["Monthly Cost Living (USD)"] <= max_cost) | (filtered_df["Monthly Cost Living (USD)"].isna())
        filtered_df = filtered_df[cost_mask]
    
    return style_dataframe(filtered_df)

def get_unique_values(column):
    unique_values = ["All"] + sorted(df[column].unique().tolist())
    return unique_values

def get_country_with_emoji(column):
    choices_with_emoji = ["✈️ All"]
    for c in df[column].unique():
        if c in country_emoji_map:
            choices_with_emoji.append(country_emoji_map[c])
        else:
            choices_with_emoji.append(c)
    return sorted(choices_with_emoji)

def get_terrain_with_emoji():
    terrains = ["✨ All"]
    for terrain in sorted(df["Terrain"].unique()):
        if terrain in terrain_emoji_map:
            terrains.append(terrain_emoji_map[terrain])
    return terrains

styled_df = style_dataframe(df)

with gr.Blocks(js=js_func, css="""
    .gradio-container .table-wrap {
        font-family: 'Inter', sans-serif;
    }
    .gradio-container table td, .gradio-container table th {
        text-align: left;
    }
    .gradio-container table th {
        background-color: #f3f4f6;
        font-weight: 600;
    }
    /* Style for null values */
    .null-value {
        color: #999;
        font-style: italic;
        background-color: rgba(200, 200, 200, 0.2);
    }
    .title {
        font-size: 3rem;
        font-weight: 600;
        text-align: center;
    }
    
    .app-subtitle {
        color: rgba(255, 255, 255, 0.8);
        font-size: 1.2rem;
        margin-bottom: 15px;
    } 

""") as demo:
    gr.HTML(elem_classes="title", value="🌍")
    gr.HTML("<img src='https://see.fontimg.com/api/rf5/JpZqa/MWMyNzc2ODk3OTFlNDk2OWJkY2VjYTIzNzFlY2E4MWIudHRm/bm9tYWQgZGVzdGluYXRpb25z/super-feel.png?r=fs&h=130&w=2000&fg=e2e2e2&bg=FFFFFF&tb=1&s=65' alt='Graffiti fonts'></a>")
    gr.Markdown("Discover the best places for digital nomads around the globe")
    
    with gr.Row():
        with gr.Column(scale=1):
            cost_slider = gr.Slider(
                minimum=500,
                maximum=4000,
                value=4000,
                step=100,
                label="💰 Maximum Monthly Cost of Living (USD)"
            )
            
            min_internet = gr.Slider(
                minimum=0,
                maximum=400,
                value=0,
                step=10,
                label="🌐 Minimum Internet Speed (Mbps)"
            )
            
            min_quality = gr.Slider(
                minimum=5,
                maximum=10,
                value=5,
                step=0.1,
                label="⭐ Minimum Quality of Life"
            )
        
        with gr.Column(scale=1):
            country_dropdown = gr.Dropdown(
                choices=get_country_with_emoji("Country"),
                value="✈️ All",
                label="🌏 Filter by Country"
            )
            
            terrain_dropdown = gr.Dropdown(
                choices=get_terrain_with_emoji(),
                value="✨ All",
                label="🏞️ Filter by Terrain"
            )
            
        with gr.Column(scale=1):
            visa_filter = gr.CheckboxGroup(
                choices=["Has Digital Nomad Visa", "Visa Length ≥ 12 Months"],
                label="🛂 Visa Requirements"
            )
            
            special_features = gr.CheckboxGroup(
                choices=["Coastal Cities", "Cultural Hotspots", "Affordable (<$1000/month)"],
                label="✨ Special Features"
            )
    
    
    data_table = gr.Dataframe(
        value=styled_df,
        datatype=["str", "str", "str", "number", "number", "number", "str", "number", "number", "str", "str"],
        max_height=600,
        interactive=False,
        show_copy_button=True,
        show_row_numbers=True,
        show_search=True,
        show_fullscreen_button=True,
        pinned_columns=3,
        column_widths=[100, 100, 100]
    )
    
    def process_country_filter(country, cost):
        if country and country.startswith("✈️ All"):
            country = "All"
        else:
            for emoji_code in ["🇧🇷", "🇭🇺", "🇺🇾", "🇵🇹", "🇬🇪", "🇹🇭", "🇦🇪", "🇪🇸", "🇮🇹", "🇨🇦", "🇨🇴", "🇲🇽", "🇯🇵", "🇰🇷"]:
                if country and emoji_code in country:
                    country = country.split(" ", 1)[1]
                    break
                    
        filtered_df = df.copy()
        
        if country and country != "All":
            filtered_df = filtered_df[filtered_df["Country"] == country]
        
        if cost < df["Monthly Cost Living (USD)"].max():
            cost_mask = (filtered_df["Monthly Cost Living (USD)"] <= cost) & (filtered_df["Monthly Cost Living (USD)"].notna())
        
            filtered_df = filtered_df[cost_mask]
        
        return style_dataframe(filtered_df)
    
    def apply_advanced_filters(country, cost, min_internet_speed, min_qol, visa_reqs, features, terrain):
        if country and country.startswith("✈️ All"):
            country = "All"
        else:
            for emoji_code in ["🇧🇷", "🇭🇺", "🇺🇾", "🇵🇹", "🇬🇪", "🇹🇭", "🇦🇪", "🇪🇸", "🇮🇹", "🇨🇦", "🇨🇴", "🇲🇽", "🇯🇵", "🇰🇷"]:
                if country and emoji_code in country:
                    country = country.split(" ", 1)[1]
                    break
        
        if terrain and terrain.startswith("✨ All"):
            terrain = "All"
        else:
            for emoji in ["🏖️", "⛰️", "🏙️", "🏜️", "🌴", "🏝️", "🌲", "🌾"]:
                if terrain and emoji in terrain:
                    terrain = terrain.split(" ", 1)[1]
                    break
        
        filtered_df = df.copy()
        
        if country and country != "All":
            filtered_df = filtered_df[filtered_df["Country"] == country]
        
        if cost < df["Monthly Cost Living (USD)"].max():
            cost_mask = (filtered_df["Monthly Cost Living (USD)"] <= cost) & (filtered_df["Monthly Cost Living (USD)"].notna())
            filtered_df = filtered_df[cost_mask]
        
        if min_internet_speed > 0:
            filtered_df = filtered_df[filtered_df["Internet Speed (Mbps)"] >= min_internet_speed]

        if min_qol > 5:
            filtered_df = filtered_df[filtered_df["Quality of Life"] >= min_qol]
        
        if "Has Digital Nomad Visa" in visa_reqs:
            filtered_df = filtered_df[filtered_df["Digital Nomad Visa"] == "Yes"]
        
        if "Visa Length ≥ 12 Months" in visa_reqs:
            filtered_df = filtered_df[filtered_df["Visa Length (Months)"] >= 12]
        
        if terrain and terrain != "All":
            filtered_df = filtered_df[filtered_df["Terrain"] == terrain]
        
        if "Coastal Cities" in features:
            coastal_keywords = ["coast", "beach", "sea", "ocean"]
            mask = filtered_df["Key Feature"].str.contains("|".join(coastal_keywords), case=False, na=False)
            filtered_df = filtered_df[mask]
        
        if "Cultural Hotspots" in features:
            cultural_keywords = ["cultur", "art", "histor", "heritage"]
            mask = filtered_df["Key Feature"].str.contains("|".join(cultural_keywords), case=False, na=False)
            filtered_df = filtered_df[mask]
        
        if "Affordable (<$1000/month)" in features:
            filtered_df = filtered_df[filtered_df["Monthly Cost Living (USD)"] < 1000]
        
        return style_dataframe(filtered_df)
    
    country_dropdown.change(
        apply_advanced_filters, 
        [country_dropdown, cost_slider, min_internet, min_quality, visa_filter, special_features, terrain_dropdown], 
        data_table
    )
    cost_slider.change(
        apply_advanced_filters, 
        [country_dropdown, cost_slider, min_internet, min_quality, visa_filter, special_features, terrain_dropdown], 
        data_table
    )
    min_internet.change(
        apply_advanced_filters, 
        [country_dropdown, cost_slider, min_internet, min_quality, visa_filter, special_features, terrain_dropdown], 
        data_table
    )
    min_quality.change(
        apply_advanced_filters, 
        [country_dropdown, cost_slider, min_internet, min_quality, visa_filter, special_features, terrain_dropdown], 
        data_table
    )
    visa_filter.change(
        apply_advanced_filters, 
        [country_dropdown, cost_slider, min_internet, min_quality, visa_filter, special_features, terrain_dropdown], 
        data_table
    )
    special_features.change(
        apply_advanced_filters, 
        [country_dropdown, cost_slider, min_internet, min_quality, visa_filter, special_features, terrain_dropdown], 
        data_table
    )
    terrain_dropdown.change(
        apply_advanced_filters, 
        [country_dropdown, cost_slider, min_internet, min_quality, visa_filter, special_features, terrain_dropdown], 
        data_table
    )
    
demo.launch()