"""FlowDeck — Dashboard : workspace.

Découpe A28 de l'ancien app/routers/dashboard.py (2 735 lignes, 63 routes) — un module par concern, contrat inchangé.
"""
from __future__ import annotations

import logging

from fastapi import APIRouter, Body, Query, Request
from fastapi.responses import HTMLResponse, RedirectResponse

from app.auth.session import SessionManager
from app.db import get_conn
from app.services.gitea_client import get_user_gitea_client, gitea

from ._common import _get_active_workspace, _get_user_id, _sidebar_data

logger = logging.getLogger(__name__)
router = APIRouter(tags=["dashboard"])




@router.get("/", response_class=HTMLResponse)
async def dashboard(
    request: Request,
    search: str = Query(default=""),
    show_archived: bool = Query(default=False),
):
    """Smart root route: landing for visitors, local workspace for new users, dashboard for Gitea users."""
    user = SessionManager.decode_session(request.cookies.get("flowdeck_session", ""))

    # ── Not authenticated → show landing page ──
    if not user:
        # Allow through if DB is empty (fresh install)
        try:
            with get_conn() as conn:
                count = conn.execute("SELECT COUNT(*) FROM users").fetchone()[0]
                if count == 0:
                    from app.templating import ENV
                    env = ENV
                    template = env.get_template("landing.html")
                    return template.render()
        except Exception:
            logger.exception("dashboard")
        from app.templating import ENV
        env = ENV
        template = env.get_template("landing.html")
        return template.render()

    # ── Authenticated ──
    user_id = user.get("id", 1)
    has_gitea = False
    try:
        with get_conn() as conn:
            tok = conn.execute(
                "SELECT access_token FROM user_oauth_tokens WHERE user_id=? AND provider='gitea'",
                (user_id,),
            ).fetchone()
            has_gitea = bool(tok)
    except Exception:
        logger.exception("dashboard")

    if not has_gitea:
        # Check if user has any workspace
        try:
            with get_conn() as conn:
                ws_count = conn.execute(
                    "SELECT COUNT(*) FROM workspaces WHERE owner_id=?", (user_id,)
                ).fetchone()[0]
                if ws_count == 0:
                    # v5.2.0: first-launch → onboarding wizard
                    return RedirectResponse("/welcome", status_code=302)
        except Exception:
            logger.exception("dashboard")
        return RedirectResponse("/local-workspace", status_code=302)

    # ── Gitea user → full dashboard ──
    try:
        repos = await gitea.get_user_repos(page=1, limit=50)
        if search:
            q = search.lower()
            repos = [r for r in repos if q in r.get("full_name", "").lower()
                     or q in (r.get("description") or "").lower()]
        if not show_archived:
            repos = [r for r in repos if not r.get("archived", False)]
        repos.sort(key=lambda r: r.get("updated_at", ""), reverse=True)
    except Exception as e:
        logger.error("Dashboard error: %s", e)
        repos = []

    from app.templating import ENV
    env = ENV
    sidebar = _sidebar_data(request, repos)
    template = env.get_template("dashboard.html")
    return template.render(request=request, repos=repos, search=search,
                           show_archived=show_archived, **sidebar)


# ═══════════ Workspace ═══════════




# ═══════════ Workspace ═══════════

@router.get("/workspace", response_class=HTMLResponse)
def workspace_page(request: Request):
    """Unified workspace showing all projects."""
    from app.templating import ENV
    env = ENV
    sidebar = _sidebar_data(request, [])
    user = SessionManager.decode_session(request.cookies.get("flowdeck_session", ""))
    if not user:
        return RedirectResponse("/auth/login?provider=local", status_code=302)
    ctx = {**sidebar, "user": user}
    # Pass active workspace for breadcrumb nav menu
    ws = _get_active_workspace(request, user_id=_get_user_id(request))
    ctx["nav_workspace_id"] = ws["id"] if ws else 0
    template = env.get_template("workspace.html")
    return template.render(**ctx)




@router.get("/gitea-workspace", response_class=HTMLResponse)
def gitea_workspace_page(request: Request):
    """Gitea workspace — browse repo files."""
    import json

    from app.templating import ENV
    env = ENV
    sidebar = _sidebar_data(request, [])
    user = SessionManager.decode_session(request.cookies.get("flowdeck_session", ""))
    if not user:
        return RedirectResponse("/auth/login?provider=local", status_code=302)
    owner = request.query_params.get("owner", "")
    repo = request.query_params.get("repo", "")
    ws_key = f"{owner}/{repo}" if owner and repo else ""
    ws_name = ws_key or "Gitea Workspace"
    # Auto-create local workspace mirror for storing local files
    local_ws_id = None
    if ws_key:
        with get_conn() as conn:
            existing = conn.execute(
                "SELECT id, owner_id FROM workspaces WHERE owner_id=? AND name=? AND settings_json LIKE ?",
                (user["id"], ws_key, "%gitea_repo%")
            ).fetchone()
            if existing:
                local_ws_id = existing["id"]
            else:
                c = conn.execute(
                    "INSERT INTO workspaces (name, owner_id, settings_json) VALUES (?, ?, ?)",
                    (ws_key, user["id"], json.dumps({"gitea_repo": ws_key, "gitea_owner": owner}))
                )
                local_ws_id = c.lastrowid
                conn.execute(
                    "INSERT INTO workspace_members (workspace_id, user_id, role) VALUES (?, ?, ?)",
                    (local_ws_id, user["id"], "admin")
                )
                conn.commit()
    ctx = {
        **sidebar,
        "user": user,
        "active_ws_name": ws_name,
        "workspace_key": ws_key,
        "gitea_workspace": True,  # always true on this page
        "gitea_owner": owner,
        "gitea_repo": repo,
        "workspace_name": ws_name,
        "workspace_initial": repo[0].upper() if repo else "G",
        "owner": owner,
        "repo": repo,
        "nav_workspace_id": local_ws_id or 0,  # for breadcrumb nav menu
    }
    template = env.get_template("gitea_workspace.html")
    resp = HTMLResponse(content=template.render(**ctx))
    resp.set_cookie("flowdeck_workspace", f"gitea:{owner}:{repo}", path="/", samesite="lax")
    return resp




@router.get("/api/workspace/projects")
async def list_workspace_projects(request: Request):
    """List all projects: built-in + Gitea + GitHub.
    Uses the user's own Gitea token if connected, not the global admin token."""
    user = SessionManager.decode_session(request.cookies.get("flowdeck_session", ""))

    builtin = []
    with get_conn() as conn:
        rows = conn.execute(
            "SELECT id, title FROM pages WHERE parent_id IS NULL AND collection_row_id IS NULL ORDER BY updated_at DESC LIMIT 20"
        ).fetchall()
        # A23 : une seule agrégation GROUP BY au lieu d'un COUNT par ligne.
        counts = {}
        if rows:
            for c in conn.execute(
                "SELECT parent_id, COUNT(*) AS c FROM pages WHERE parent_id IN ({}) GROUP BY parent_id".format(
                    ",".join("?" * len(rows))
                ),
                [r["id"] for r in rows],
            ).fetchall():
                counts[c["parent_id"]] = c["c"]
        for r in rows:
            builtin.append({"id": str(r["id"]), "name": r["title"] or "Untitled", "pageCount": counts.get(r["id"], 0), "forge": "builtin"})

    gitea_repos = []
    # Use per-user token if available, otherwise return empty
    user_gitea = get_user_gitea_client(request) if user else None
    if user_gitea:
        try:
            repos = await user_gitea.get_user_repos(page=1, limit=50)
            for repo in repos:
                gitea_repos.append({
                    "id": str(repo.get("id", "")),
                    "name": repo.get("name", ""),
                    "full_name": repo.get("full_name", ""),
                    "description": repo.get("description", ""),
                    "html_url": repo.get("html_url", ""),
                    "language": repo.get("language", ""),
                    "forge": "gitea",
                })
        except Exception:
            logger.exception("list_workspace_projects")

    return {"builtin": builtin, "gitea": gitea_repos, "github": []}




@router.post("/api/workspace/projects")
def create_workspace_project(request: Request, body: dict = Body(default={})):
    name = body.get("name", "").strip()
    if not name:
        return {"error": "Name required"}
    with get_conn() as conn:
        cursor = conn.execute(
            "INSERT INTO pages (workspace, title, content, content_format, parent_section) VALUES ('', ?, '', 'blocks', 'Private')",
            (name,),
        )
        conn.commit()
        pid = cursor.lastrowid
    return {"id": pid, "name": name, "forge": "builtin"}


# ═══════════ Workspace Members API ═══════════




# ═══════════ Workspace Members API ═══════════

@router.get("/api/workspace/{ws_id:int}/members")
def list_members(request: Request, ws_id: int):
    """List all members of a workspace."""
    with get_conn() as conn:
        rows = conn.execute(
            """SELECT u.id, u.login, u.full_name, u.avatar_url, wm.role, wm.joined_at
               FROM workspace_members wm JOIN users u ON u.id = wm.user_id
               WHERE wm.workspace_id=? ORDER BY wm.joined_at""", (ws_id,)
        ).fetchall()
    return {"members": [dict(r) for r in rows]}




@router.post("/api/workspace/{ws_id:int}/members")
def invite_member(request: Request, ws_id: int, body: dict = Body(default={})):
    """Invite a user to a workspace by email."""
    email = body.get("email", "").strip()
    role = body.get("role", "editor")
    if role not in ("owner", "admin", "editor", "viewer"):
        return {"error": "Invalid role"}, 400
    with get_conn() as conn:
        user = conn.execute("SELECT id FROM users WHERE login=? OR email=?", (email, email)).fetchone()
        if not user:
            return {"error": "User not found"}, 404
        try:
            conn.execute(
                "INSERT INTO workspace_members (workspace_id, user_id, role) VALUES (?, ?, ?)",
                (ws_id, user["id"], role),
            )
            conn.commit()
        except Exception:
            return {"error": "Already a member"}, 409
    return {"status": "ok", "user_id": user["id"], "role": role}




@router.put("/api/workspace/{ws_id:int}/members/{user_id:int}")
def update_member_role(request: Request, ws_id: int, user_id: int, body: dict = Body(default={})):
    """Change a member's role."""
    role = body.get("role", "editor")
    if role not in ("owner", "admin", "editor", "viewer"):
        return {"error": "Invalid role"}
    with get_conn() as conn:
        conn.execute(
            "UPDATE workspace_members SET role=? WHERE workspace_id=? AND user_id=?",
            (role, ws_id, user_id),
        )
        conn.commit()
    return {"status": "ok"}




@router.delete("/api/workspace/{ws_id:int}/members/{user_id:int}")
def remove_member(request: Request, ws_id: int, user_id: int):
    """Remove a member from a workspace."""
    with get_conn() as conn:
        conn.execute(
            "DELETE FROM workspace_members WHERE workspace_id=? AND user_id=?",
            (ws_id, user_id),
        )
        conn.commit()
    return {"status": "ok"}


# ═══════════ Local Workspace (file/folder CRUD) ═══════════