package server

import (
	"net/http"
	"strconv"
	"strings"
)

// pgListCommands returns tool executions (any tool) from the activity table.
func (s *Server) pgListCommands(w http.ResponseWriter, r *http.Request) {
	q := r.URL.Query()
	page := atoiDefault(q.Get("page"), 0)
	size := atoiDefault(q.Get("size"), 50)
	keyword := q.Get("q")

	var expID *int64
	if tv := q.Get("task"); tv != "" {
		if n, err := strconv.ParseInt(tv, 10, 64); err == nil {
			expID = &n
		}
	}

	records, total, err := s.m.PG().ListCommands(expID, keyword, page, size)
	if err != nil {
		writeErr(w, 500, err.Error())
		return
	}
	writeJSON(w, 200, map[string]any{"commands": records, "total": total})
}

// pgListLLMRecords returns paginated LLM call records.
func (s *Server) pgListLLMRecords(w http.ResponseWriter, r *http.Request) {
	q := r.URL.Query()
	page := atoiDefault(q.Get("page"), 0)
	size := atoiDefault(q.Get("size"), 50)
	model := q.Get("model")
	session := q.Get("session")
	task := q.Get("task")

	records, total, err := s.m.PG().ListLLMRecords(model, session, task, page, size)
	if err != nil {
		writeErr(w, 500, err.Error())
		return
	}
	writeJSON(w, 200, map[string]any{"records": records, "total": total})
}

// pgLLMTasks returns distinct recorded tasks with counts, for the page's task
// picker (pick a task → filter the list, then delete its conversations).
func (s *Server) pgLLMTasks(w http.ResponseWriter, r *http.Request) {
	tasks, err := s.m.PG().LLMTasks()
	if err != nil {
		writeErr(w, 500, err.Error())
		return
	}
	writeJSON(w, 200, map[string]any{"tasks": tasks})
}

// pgDeleteLLMRecords removes all LLM records for one exact task_id (the same
// match the task picker uses). Empty task → 400. Returns rows deleted.
func (s *Server) pgDeleteLLMRecords(w http.ResponseWriter, r *http.Request) {
	task := strings.TrimSpace(r.URL.Query().Get("task"))
	if task == "" {
		writeErr(w, 400, "missing task")
		return
	}
	n, err := s.m.PG().DeleteLLMRecords(task)
	if err != nil {
		writeErr(w, 500, err.Error())
		return
	}
	writeJSON(w, 200, map[string]any{"deleted": n})
}

// pgGetLLMRecord returns a single LLM record with full request/response bodies.
func (s *Server) pgGetLLMRecord(w http.ResponseWriter, r *http.Request) {
	id, err := strconv.ParseInt(r.PathValue("id"), 10, 64)
	if err != nil {
		writeErr(w, 400, "invalid id")
		return
	}
	rec, err := s.m.PG().GetLLMRecord(id)
	if err != nil {
		writeErr(w, 404, "not found")
		return
	}
	writeJSON(w, 200, rec)
}