#!/usr/bin/env python3
"""
Cara Master Index Dataset Explorer CLI Tool
Zero External Dependencies (Runs on standard Python 3.7+ across Windows, macOS, Linux).
"""

import sys
import os
import re
import json
import sqlite3
import argparse
from urllib.parse import urlparse
from collections import Counter

# Dynamic discovery of catalog.db (100% portable & anonymous)
DB_CANDIDATE_PATHS = [
    "catalog.db",
    os.path.join(os.path.dirname(os.path.abspath(__file__)), "catalog.db"),
    "../catalog.db",
]

COMMON_PLACEHOLDERS = [
    "username",
    "<username>",
    "your_username",
    "yourname",
    "your_name",
    "handle",
    "<handle>",
    "artist",
    "<artist>"
]


def find_database() -> str:
    """Auto-detects catalog.db location dynamically."""
    for path in DB_CANDIDATE_PATHS:
        if os.path.exists(path) and os.path.getsize(path) > 1000000:
            return path
    return None


def get_db_connection():
    """Connects to catalog.db with clean error guidance if missing."""
    db_path = find_database()
    if not db_path:
        print("\n" + "=" * 80)
        print("❌ DATABASE NOT FOUND: 'catalog.db'")
        print("=" * 80)
        print("Please make sure 'catalog.db' is located in the same folder as this script!")
        print(f"Current working directory: {os.getcwd()}")
        print("=" * 80 + "\n")
        sys.exit(1)

    try:
        conn = sqlite3.connect(db_path)
        conn.row_factory = sqlite3.Row
        return conn
    except Exception as e:
        print(f"\n❌ Error opening database: {e}\n")
        sys.exit(1)


def sanitize_username(input_str: str) -> str:
    """Cleans artist handle input."""
    if not input_str:
        return ""
    cleaned = input_str.strip().lstrip("<").rstrip(">").strip()
    
    if "cara.app" in cleaned or "http" in cleaned:
        path = urlparse(cleaned).path.strip("/")
        parts = path.split("/")
        if len(parts) > 0 and parts[0] not in ["post", "search", "explore"]:
            cleaned = parts[0]
        elif len(parts) > 1 and parts[0] == "user":
            cleaned = parts[1]

    return cleaned.lstrip("@").strip()


def sanitize_post_id(input_str: str) -> str:
    """Cleans post input and extracts UUID."""
    if not input_str:
        return ""
    cleaned = input_str.strip().lstrip("<").rstrip(">").strip()
    
    uuid_match = re.search(r'[0-9a-fA-F]{8}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{4}-[0-9a-fA-F]{12}', cleaned)
    if uuid_match:
        return uuid_match.group(0).lower()

    if "/" in cleaned:
        cleaned = cleaned.split("/")[-1].split("?")[0]
    return cleaned.strip()


def sanitize_art_query(input_str: str) -> str:
    """Extracts clean image hash / filename from CDN URL."""
    if not input_str:
        return ""
    cleaned = input_str.strip().lstrip("<").rstrip(">").strip()
    if "/" in cleaned:
        cleaned = cleaned.split("/")[-1].split("?")[0]
    return cleaned.strip()


def explore_user(username_raw: str, is_overview: bool = False):
    """
    Explores all posts and artworks by an artist handle.
    - is_overview=True: Shows stats and clean list of posts without image URLs.
    - is_overview=False: Shows full breakdown with every master slide and thumbnail URL.
    """
    username = sanitize_username(username_raw)
    
    if username.lower() in [p.lower() for p in COMMON_PLACEHOLDERS]:
        print("\n" + "=" * 80)
        print(f"😅 I doubt your account is named '{username}' — did you forget to type your own name?")
        print("Example: python tool.py --user mayonnaisejar1446 --overview")
        print("=" * 80 + "\n")
        return

    if not username:
        print("\n⚠️ Please specify an artist handle (e.g. 'python tool.py --user mayonnaisejar1446')\n")
        return

    conn = get_db_connection()
    cur = conn.cursor()

    # 1. Fetch Posts from artworks table
    cur.execute("""
        SELECT post_id, cdn_url as cover_url, created_at 
        FROM artworks 
        WHERE author_slug = ? COLLATE NOCASE
        ORDER BY created_at DESC;
    """, (username,))
    posts = cur.fetchall()

    if not posts:
        cur.execute("SELECT DISTINCT author_slug FROM master_artworks_12m WHERE author_slug = ? COLLATE NOCASE;", (username,))
        found_slug = cur.fetchone()
        if not found_slug:
            print("\n" + "=" * 80)
            print(f"❌ Artist '@{username}' was not found in the database.")
            print("Tip: Double-check the exact handle as it appears in the artist's Cara profile URL.")
            print("=" * 80 + "\n")
            conn.close()
            return

    # 2. Fetch Master Artworks
    cur.execute("""
        SELECT post_id, slide_number, title, cdn_url, width, height, created_at 
        FROM master_artworks_12m 
        WHERE author_slug = ? COLLATE NOCASE
        ORDER BY post_id, slide_number;
    """, (username,))
    artworks = cur.fetchall()

    # 3. Fetch Post Metadata
    cur.execute("""
        SELECT post_id, author_name, title, content, softwares, tags, created_at 
        FROM post_metadata 
        WHERE author_slug = ? COLLATE NOCASE;
    """, (username,))
    meta_rows = {r["post_id"]: r for r in cur.fetchall()}

    post_artworks = {}
    for art in artworks:
        post_artworks.setdefault(art["post_id"], []).append(art)

    # Aggregate stats
    display_name = None
    all_softwares = []
    all_tags = []
    all_dates = []

    for pid, meta in meta_rows.items():
        if meta["author_name"] and not display_name:
            display_name = meta["author_name"]
        if meta["created_at"]:
            all_dates.append(meta["created_at"][:10])
        try:
            sw = json.loads(meta["softwares"])
            if isinstance(sw, list):
                all_softwares.extend(sw)
        except Exception:
            pass
        try:
            tg = json.loads(meta["tags"])
            if isinstance(tg, list):
                all_tags.extend(tg)
        except Exception:
            pass

    top_software = [s for s, _ in Counter(all_softwares).most_common(5)]
    top_tags = [t for t, _ in Counter(all_tags).most_common(8)]
    date_range = f"{min(all_dates)} to {max(all_dates)}" if all_dates else "N/A"

    name_header = f"@{username}" + (f" ({display_name})" if display_name else "")

    print("\n" + "=" * 80)
    print(f"👤 ARTIST SUMMARY: {name_header}")
    print("=" * 80)
    print(f"📊 Total Posts (Cover Thumbnails): {len(posts):,}")
    print(f"🖼️ Total Master Artworks (Full-Res): {len(artworks):,}")
    if top_software:
        print(f"💻 Primary Software:              {', '.join(top_software)}")
    if top_tags:
        print(f"🏷️ Top Tags:                      {', '.join(top_tags)}")
    if all_dates:
        print(f"📅 Activity Span:                 {date_range}")
    print(f"🔗 Profile Link:                  https://cara.app/{username}")
    print("=" * 80)

    if is_overview:
        print(f"📋 POSTS OVERVIEW ({len(posts)} posts): [Tip: Omit --overview to view all image links]")
        print("-" * 80)
        for idx, p in enumerate(posts, 1):
            pid = p["post_id"]
            arts = post_artworks.get(pid, [])
            meta = meta_rows.get(pid)

            title = "Untitled"
            if meta and meta["title"] and meta["title"].strip():
                title = meta["title"].strip()
            elif arts and arts[0]["title"] and arts[0]["title"].strip():
                title = arts[0]["title"].strip()

            date_str = p["created_at"][:10] if p["created_at"] else "Unknown"
            slides_info = f"{len(arts)} master slide(s)" if arts else "1 cover image"

            print(f"[{idx}] 📌 {title} ({date_str}) | {slides_info}")
            print(f"    🔗 https://cara.app/post/{pid}")

    else:
        print("📋 DETAILED POSTS & ARTWORK LINKS:")
        print("-" * 80)
        for idx, p in enumerate(posts, 1):
            pid = p["post_id"]
            arts = post_artworks.get(pid, [])
            meta = meta_rows.get(pid)

            title = "Untitled"
            if meta and meta["title"] and meta["title"].strip():
                title = meta["title"].strip()
            elif arts and arts[0]["title"] and arts[0]["title"].strip():
                title = arts[0]["title"].strip()

            date_str = p["created_at"][:10] if p["created_at"] else "Unknown"

            print(f"\n[{idx}] 📌 {title} ({date_str})")
            print(f"    🔗 Post:      https://cara.app/post/{pid}")
            if p["cover_url"]:
                print(f"    🖼️ Thumbnail: {p['cover_url']}")

            if arts:
                for a in arts:
                    res = f"[{a['width']}x{a['height']}]" if a['width'] and a['height'] else "[Full-Res]"
                    print(f"    • Slide {a['slide_number']} {res}: {a['cdn_url']}")

    print("\n" + "=" * 80 + "\n")
    conn.close()


def explore_post(post_raw: str):
    """Explores a post by URL or UUID."""
    post_id = sanitize_post_id(post_raw)
    if not post_id or post_id.lower() in ["post url", "<post url>", "post_id", "<post_id>"]:
        print("\n" + "=" * 80)
        print("😅 Did you copy '<Post url>' literally from the README?")
        print("Example: python tool.py --post https://cara.app/post/5aac58cb-c33f-4622-9199-d6531e8f47f8")
        print("=" * 80 + "\n")
        return

    conn = get_db_connection()
    cur = conn.cursor()

    cur.execute("""
        SELECT id, post_id, author_slug, slide_number, title, cdn_url, width, height, created_at 
        FROM master_artworks_12m 
        WHERE post_id = ?
        ORDER BY slide_number;
    """, (post_id,))
    slides = cur.fetchall()

    cur.execute("SELECT cdn_url FROM artworks WHERE post_id = ?;", (post_id,))
    cover_row = cur.fetchone()
    cover_url = cover_row["cdn_url"] if cover_row else None

    if not slides and not cover_url:
        print("\n" + "=" * 80)
        print(f"❌ Post ID '{post_id}' was not found in the master catalog.")
        print("=" * 80 + "\n")
        conn.close()
        return

    cur.execute("SELECT * FROM post_metadata WHERE post_id = ?;", (post_id,))
    meta = cur.fetchone()

    author = slides[0]["author_slug"] if slides else (meta["author_slug"] if meta else "unknown")
    title = (slides[0]["title"] if slides and slides[0]["title"] else None) or (meta["title"] if meta and meta["title"] else "Untitled")

    print("\n" + "=" * 80)
    print(f"📌 POST ID:   {post_id}")
    print(f"👤 ARTIST:    @{author} (https://cara.app/{author})")
    print(f"🎨 TITLE:     {title}")
    print(f"🔗 WEB LINK:  https://cara.app/post/{post_id}")

    if cover_url:
        print(f"🖼️ THUMBNAIL: {cover_url}")

    if meta:
        try:
            tags = json.loads(meta["tags"])
            softwares = json.loads(meta["softwares"])
            if softwares:
                print(f"💻 SOFTWARE:  {softwares}")
            if tags:
                print(f"🏷️ TAGS:      {tags}")
            if meta["content"]:
                print(f"\n📝 POST BODY:\n{meta['content'].strip()}")
        except Exception:
            pass

    if slides:
        print("\n🖼️ MASTER ARTWORKS (" + str(len(slides)) + " slide(s)):")
        print("-" * 80)
        for s in slides:
            res = f"{s['width']}x{s['height']}" if s['width'] and s['height'] else "Full-Res"
            print(f"  • Slide {s['slide_number']} [{res}]: {s['cdn_url']}")
    print("=" * 80 + "\n")
    conn.close()


def explore_artwork(art_raw: str):
    """Reverse traces an artwork CDN link or image filename back to its post and creator."""
    raw_clean = art_raw.strip().lstrip("<").rstrip(">").strip()
    art_hash = sanitize_art_query(raw_clean)

    if not art_hash or art_hash.lower() in ["cdn url", "<cdn url>", "cdn_url", "<cdn_url>"]:
        print("\n" + "=" * 80)
        print("😅 Did you copy '<CDN url>' literally from the README?")
        print("Example: python tool.py --art otawrou-8L8tjCPtnNl1TStnB3Psu-0000-00091.gif")
        print("=" * 80 + "\n")
        return

    conn = get_db_connection()
    cur = conn.cursor()

    # Fast Path 1: Exact URL match
    cur.execute("SELECT post_id, author_slug, slide_number, title, cdn_url, width, height, created_at FROM master_artworks_12m WHERE cdn_url = ?;", (raw_clean,))
    match = cur.fetchone()

    # Fast Path 2: Exact Filename match
    if not match:
        cur.execute("SELECT post_id, author_slug, slide_number, title, cdn_url, width, height, created_at FROM master_artworks_12m WHERE cdn_url LIKE ?;", (f"https://cdn.cara.app/production/posts/%/{art_hash}",))
        match = cur.fetchone()

    # Fallback Path 3: Substring search
    if not match:
        cur.execute("SELECT post_id, author_slug, slide_number, title, cdn_url, width, height, created_at FROM master_artworks_12m WHERE cdn_url LIKE ?;", (f"%{art_hash}%",))
        match = cur.fetchone()

    # Fallback Path 4: Check cover thumbnails in artworks
    if not match:
        cur.execute("SELECT post_id, author_slug, cdn_url, created_at FROM artworks WHERE cdn_url LIKE ?;", (f"%{art_hash}%",))
        cover_match = cur.fetchone()
        if cover_match:
            print("\n" + "=" * 80)
            print("🔍 REVERSE ARTWORK TRACER (Feed Cover Thumbnail)")
            print("=" * 80)
            print(f"🖼️ Thumbnail:  {cover_match['cdn_url']}")
            print(f"📌 Post ID:    {cover_match['post_id']}")
            print(f"👤 Creator:    @{cover_match['author_slug']} (https://cara.app/{cover_match['author_slug']})")
            print(f"🔗 Direct Web: https://cara.app/post/{cover_match['post_id']}")
            print("=" * 80 + "\n")
            conn.close()
            return

    if not match:
        print("\n" + "=" * 80)
        print(f"❌ Artwork image '{art_hash}' was not found in the database.")
        print("=" * 80 + "\n")
        conn.close()
        return

    pid = match["post_id"]
    cur.execute("SELECT * FROM post_metadata WHERE post_id = ?;", (pid,))
    meta = cur.fetchone()

    print("\n" + "=" * 80)
    print("🔍 REVERSE ARTWORK TRACER (Master Full-Res Artwork)")
    print("=" * 80)
    print(f"🖼️ Image Link:  {match['cdn_url']}")
    print(f"📐 Resolution:  {match['width']}x{match['height']} (Slide {match['slide_number']})")
    print(f"📌 Post ID:     {match['post_id']}")
    print(f"👤 Creator:     @{match['author_slug']} (https://cara.app/{match['author_slug']})")
    print(f"🎨 Title:       {match['title'] or 'Untitled'}")
    print(f"📅 Upload Date: {match['created_at']}")
    print(f"🔗 Direct Web:  https://cara.app/post/{match['post_id']}")

    if meta:
        try:
            tags = json.loads(meta["tags"])
            if tags:
                print(f"🏷️ Post Tags:   {tags[:6]}")
        except Exception:
            pass

    print("=" * 80 + "\n")
    conn.close()


def interactive_menu():
    """Interactive CLI menu when run with zero arguments."""
    print("\n" + "=" * 80)
    print("🎨 CARA MASTER INDEX DATASET EXPLORER")
    print("=" * 80)
    print("Choose an option:")
    print("  1. Look up an Artist / Username (Summary Overview)")
    print("  2. Look up an Artist / Username (Full Artwork Links)")
    print("  3. Look up a Post Link / Post UUID")
    print("  4. Reverse Trace an Artwork CDN Image URL")
    print("  5. Exit")
    print("=" * 80)

    choice = input("\nEnter choice (1-5): ").strip()
    if choice == "1":
        user_input = input("Enter username or profile URL: ").strip()
        explore_user(user_input, is_overview=True)
    elif choice == "2":
        user_input = input("Enter username or profile URL: ").strip()
        explore_user(user_input, is_overview=False)
    elif choice == "3":
        post_input = input("Enter post URL or UUID: ").strip()
        explore_post(post_input)
    elif choice == "4":
        art_input = input("Enter CDN URL or image filename: ").strip()
        explore_artwork(art_input)
    elif choice == "5" or choice.lower() in ["q", "exit", "quit"]:
        print("Goodbye!")
        sys.exit(0)
    else:
        print("Invalid choice. Exiting.")


def main():
    parser = argparse.ArgumentParser(description="Cara Master Index Dataset CLI Tool")
    parser.add_argument("--user", help="Query creator handle (e.g. --user alex123)")
    parser.add_argument("--overview", action="store_true", help="Clean summary overview (disables showing image links)")
    parser.add_argument("--post", help="Query post metadata, lore & gallery (e.g. --post https://cara.app/post/...)")
    parser.add_argument("--art", help="Reverse trace an image CDN link back to creator & post")

    if len(sys.argv) == 1:
        interactive_menu()
        return

    args = parser.parse_args()

    if args.user:
        explore_user(args.user, is_overview=args.overview)
    elif args.post:
        explore_post(args.post)
    elif args.art:
        explore_artwork(args.art)
    else:
        interactive_menu()


if __name__ == "__main__":
    main()