#pragma once
#include "database.h"
#include "types.h"

#include <stdbool.h>

typedef struct lm_ctx {
  lm_database_t *db;      // package database
  lm_pool_t     *pools;   // pool list
  char          *root;    // root path for package installtion
  char          *temp;    // temp path
  char          *data;    // package database path
  const char    *version; // libmp version (read-only)
} lm_ctx_t;

typedef struct lm_ctx_resolve_list {
  lm_pkg_t *resolving;
  lm_pkg_t *packages;
  lm_pkg_t *cur;
  size_t    count;
} lm_ctx_resolve_list_t;

typedef struct lm_ctx_update_list {
  lm_pkg_t **packages;
  size_t     count;
  size_t     index;
} lm_ctx_update_list_t;

typedef enum lm_ctx_sync_state {
  SYNC_DOWNLOADING_INFO = 0,
  SYNC_INFO_SUCCESS     = 1,
  SYNC_INFO_FAIL        = 2,
  SYNC_DOWNLOADING_LIST = 3,
  SYNC_LIST_SUCCESS     = 4,
  SYNC_LIST_FAIL        = 5,
} lm_ctx_sync_state_t;

/* ###################
   ## ctx callbacks ##
   ################### */
typedef bool (*lm_ctx_database_callback_t)(lm_ctx_t *ctx, lm_pkg_t *pkg, void *data);
typedef bool (*lm_ctx_download_callback_t)(
    lm_ctx_t *ctx, lm_pkg_t *pkg, bool is_archive, size_t current, size_t total, void *data);
typedef bool (*lm_ctx_install_callback_t)(
    lm_ctx_t *ctx, lm_pkg_t *pkg, char *file, size_t current, size_t total, void *data);
typedef bool (*lm_ctx_sync_callback_t)(
    lm_ctx_t *ctx, lm_pool_t *pool, lm_ctx_sync_state_t state, size_t current, size_t total, void *data);
typedef bool (*lm_ctx_ping_callback_t)(lm_ctx_t *ctx, lm_pool_t *pool, bool status, void *data);
typedef lm_ctx_install_callback_t lm_ctx_remove_callback_t;
typedef lm_ctx_install_callback_t lm_ctx_check_callback_t;

/* ###############
   ## ctx stuff ##
   ############### */
void lm_ctx_init(lm_ctx_t *ctx);
bool lm_ctx_set_data(lm_ctx_t *ctx, char *dir);
bool lm_ctx_set_root(lm_ctx_t *ctx, char *dir);
bool lm_ctx_set_temp(lm_ctx_t *ctx, char *dir);
void lm_ctx_free(lm_ctx_t *ctx);

/* ####################
   ## main fucntions ##
   #################### */
lm_ctx_resolve_list_t *lm_ctx_resolve(
    lm_ctx_t *ctx, lm_pkg_t *pkg); // resolves a package and returns a list of packages to install
lm_pkg_t *lm_ctx_resolve_next(lm_ctx_resolve_list_t *list); // returns the next package in the list
void      lm_ctx_resolve_free(lm_ctx_resolve_list_t *list); // frees the resolved list returned by lm_ctx_resolve

lm_ctx_update_list_t *lm_ctx_update(lm_ctx_t *ctx);                   // returns a list of packages to update
lm_pkg_t             *lm_ctx_update_next(lm_ctx_update_list_t *list); // returns the next package in the list
void                  lm_ctx_update_free(lm_ctx_update_list_t *list); // frees the update list returned by lm_ctx_update

bool lm_ctx_download(lm_ctx_t *ctx, lm_pkg_t *pkg, lm_ctx_download_callback_t callback,
    void *data); // downloads a single package
bool lm_ctx_install(
    lm_ctx_t *ctx, lm_pkg_t *pkg, lm_ctx_install_callback_t callback, void *data); // installs/updates a single package
bool lm_ctx_remove(
    lm_ctx_t *ctx, lm_pkg_t *pkg, lm_ctx_remove_callback_t callback, void *data); // removes a single package
bool lm_ctx_check(
    lm_ctx_t *ctx, lm_pkg_t *pkg, lm_ctx_check_callback_t callback, void *data);              // checks a single package
bool lm_ctx_sync(lm_ctx_t *ctx, bool do_update, lm_ctx_sync_callback_t callback, void *data); // syncs all the pools
void lm_ctx_ping(lm_ctx_t *ctx, lm_ctx_ping_callback_t callback, void *data);                 // pings all the pools
bool lm_ctx_serve(lm_ctx_t *ctx, char *addr, uint8_t threads);                                // serves all the pools

/* ####################
   ## pool fucntions ##
   #################### */
lm_pkg_t  *lm_ctx_pool_find(lm_ctx_t *ctx, char *name, char *version); // find a package in ctx pool list
lm_pool_t *lm_ctx_pool_add(lm_ctx_t *ctx, char *name, char *url);      // add a pool to the ctx pool list
bool       lm_ctx_pool_del(lm_ctx_t *ctx, char *name);                 // remove a pool from the ctx pool list
void       lm_ctx_pool_clear(lm_ctx_t *ctx);                           // clear all the pools in the ctx pool list
lm_pool_t *lm_ctx_pool_by_name(lm_ctx_t *ctx, char *name);             // find pool by name
lm_pool_t *lm_ctx_pool_by_url(lm_ctx_t *ctx, char *host, char *path);  // find pool by URL

/* ########################
   ## database fucntions ##
   ######################## */
bool lm_ctx_database_init(lm_ctx_t *ctx); // init ctx database (if not already present)
bool lm_ctx_database_is_installed(lm_ctx_t *ctx, lm_pkg_t *pkg, bool check_version); // check if a package is installed
bool lm_ctx_database_find(lm_ctx_t *ctx, lm_pkg_t *pkg, char *name, char *version);  // find a package by name
bool lm_ctx_database_foreach(
    lm_ctx_t *ctx, lm_ctx_database_callback_t callback, void *data); // loop for each package in the database