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package server
import (
"bytes"
"io"
"log/slog"
"net/http"
"strings"
"sync"
"time"
"github.com/jpappel/atlas/pkg/data"
"github.com/jpappel/atlas/pkg/index"
"github.com/jpappel/atlas/pkg/query"
)
func info(w http.ResponseWriter, r *http.Request) {
w.Write([]byte(`
<h1>Atlas Server</h1>
<p>This is the experimental atlas server!
Try POSTing a query to <pre>/search</pre></p>
`))
}
func New(db *data.Query) *http.ServeMux {
mux := http.NewServeMux()
outputBufPool := &sync.Pool{}
outputBufPool.New = func() any {
return &bytes.Buffer{}
}
mux.HandleFunc("/", info)
mux.HandleFunc("/search", func(w http.ResponseWriter, r *http.Request) {
b := &strings.Builder{}
if _, err := io.Copy(b, r.Body); err != nil {
w.WriteHeader(http.StatusInternalServerError)
w.Write([]byte("Error processing request"))
slog.Error("Error reading request body", slog.String("err", err.Error()))
return
}
artifact, err := query.Compile(b.String(), 0, 1)
if err != nil {
w.WriteHeader(http.StatusBadRequest)
w.Write([]byte(err.Error()))
slog.Error("Error compiling query", slog.String("err", err.Error()))
return
}
pathDocs, err := db.Execute(artifact)
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
w.Write([]byte("Error executing query"))
slog.Error("Error executing query", slog.String("err", err.Error()))
return
}
docs := make([]*index.Document, 0, len(pathDocs))
var maxFileTime time.Time
for _, doc := range pathDocs {
docs = append(docs, doc)
if doc.FileTime.After(maxFileTime) {
maxFileTime = doc.FileTime
}
}
if !maxFileTime.IsZero() {
w.Header().Add("Last-Modified", maxFileTime.UTC().Format(http.TimeFormat))
}
buf, ok := outputBufPool.Get().(*bytes.Buffer)
if !ok {
panic("Expected *bytes.Buffer in pool")
}
_, err = query.JsonOutput{}.OutputTo(buf, docs)
if err != nil {
w.WriteHeader(http.StatusInternalServerError)
w.Write([]byte("Error while writing output"))
slog.Error("Error writing json output", slog.String("err", err.Error()))
}
http.ServeContent(w, r, "result.json", maxFileTime, bytes.NewReader(buf.Bytes()))
})
return mux
}
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